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Kate takes the elevator from the ground floor (which is labeled 0) to a floor three levels below the ground floor. Which number represents the floor where she gets off the elevator?

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Answered by answersmine AT 22/10/2019 – 02:55 AM

The number should be -3. That is because she goes from 0 to three floors bellow, meaning it’s 0-3= -3. The first floor bellow would be -1, the second would be -2, and the third one is -3. It would be different if you counted it as number 1 as they do in some countries, but here it’s -3.

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Activity concerning a bill which may include debates and compromises known as floor plan true or false

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Activity concerning a bill which may include debates and compromises known as floor plan true or false

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Which of the following is not an example of approximate simple harmonic motion? a. a toy car rolling across the floor b. a child swinging on a swing c. a piano wire that has been struck d. a pendulum with an angle of less than 15°

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Which of the following is not an example of approximate simple harmonic motion? a. a toy car rolling across the floor b. a child swinging on a swing c. a piano wire that has been struck d. a pendulum with an angle of less than 15°

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99 POINTS! Make it good please. Read the excerpt below and answer the question. Before she [Momma] had quite arisen, she called our names and issued orders, and pushed her large feet into homemade slippers and across the bare lye-washed wooden floor to light the coal-oil lamp. In a paragraph of about 100 words, define “immediacy” and discuss how the excerpt is an example of immediacy.

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Answered by answersmine AT 22/10/2019 – 03:50 AM

The excerpt above had shown the example of immediacy because the excerpt above had shown the relationship of the person telling the story and the person who had acted. Where both of the character in the excerpt has shown the a close relationship that they acquire in which this pertains an immediacy characteristic that would explain why the excerpt had been an example of immediacy.Immediacy creates that feeling of closeness or togetherness between the speaker and the listener or reader.Immediacy is being pertained to an action of having to feel excitement or having the feeling of being urgent because of a particular event or happening. your welcome 

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When two-year old lily was told she would not get ice-cream until she finished her dinner, she threw her plate onto the floor while having a temper tantrum. freud would have suggested that lily was unable to resist the demands of her:?

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Answered by answersmine AT 22/10/2019 – 04:35 AM

Freud would have suggested that Lilly was unable to resist the demands of her ID. ID re the genetic components which relate to the aggressive and impulsive psyche of a person.  A two-year-old child’s personality is his/her ID itself, that later on becomes an ego or superego. 

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If you dive out just past the continental slope and look at the living things on the ocean floor which zone are you exploring

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The first step to answering this question is understand what heterogeneous and homogeneous mean in terms of mixtures.

While 

heterogeneous mixtures are different throughout, as in containing different substances or having materials in different phases (gas, liquid, solid) mixed in, a homogeneous mixture is the same in both appearance and composition throughout.

Basically…
Heterogeneous: different

Homogeneous: same

Some examples of

heterogeneous mixtures are trail mix, cereal, and pizza.
Some examples of homogeneous mixtures are water, bronze, and laundry detergent.

Another name for a 

heterogeneous mixture is a compound.
Another name for a 
homogeneous mixture is a solution.

So…

Heterogeneous Mixture = Compound
Homogeneous Mixture = Solution
Heterogeneous Mixture ≠ Homogeneous Mixture
Compound ≠ Solution

With this information, we can answer the question!
The question asks which choice pairs words that are the same thing.
So the answer will be the choice that is either “

Heterogeneous Mixture and Compound” or “Homogeneous Mixture and Solution.”

The answer is D. a homogenous mixture and a solution.

Hope this helps!

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"And one day those men came again, and said, now for the test, and they took the puppy to the laboratory, and I limped three-leggedly along, too, feeling proud, for any attention shown to the puppy was a pleasure to me, of course. They discussed and experimented, and then suddenly the puppy shrieked, and they set him on the floor, and he went staggering around, with his head all bloody, and the master clapped his hand and shouted: 'There, I've won–confess it! He's blind as a bat!'" "A Dog's Tale." Mark Twain, 1904. This illustrates the ________ in the story. A. style B. allusion C. conflict D. foreshadowing

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“And one day those men came again, and said, now for the test, and they took the puppy to the laboratory, and I limped three-leggedly along, too, feeling proud, for any attention shown to the puppy was a pleasure to me, of course. They discussed and experimented, and then suddenly the puppy shrieked, and they set him on the floor, and he went staggering around, with his head all bloody, and the master clapped his hand and shouted: ‘There, I’ve won–confess it! He’s blind as a bat!'” “A Dog’s Tale.” Mark Twain, 1904. This illustrates the ________ in the story. A. style B. allusion C. conflict D. foreshadowing

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WILL GIVE BRAINLIEST Consider a girl that has a mass of 55.0 kg and is standing on the floor, how much supporting force does the floor have? at least 55 kg up at least 55 kg down at least 539 N up at least 539 N down

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Answer:

1) Water has very high specific heat.

2) It expands when it freezes

3) ability to dissolve in ionic substances

4) Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid.

Explanation:

1) Water molecules due to their high specific heat , undergo relatively less increase in temperature after absorbing heat. So they prevent their adjoining area to experience sharp increase in temperature.

2) Water is an example which expands on freezing. In it , large spaces are left between molecules when it cools. It happens because hydrogen bonds prevent any two molecules to come very close thereby  creating gaps. This gap is filled up when ice melts , which results in overall reduction in volume of water.

3) Uneven distribution of charge results in water molecules becoming polar in nature . A polar substance  can be dissolved in polar solvents only.

4) It is due to property of surface tension. Property  of surface tension results due to molecules of water near the surface experiencing a  net downward  force due to hydrogen bonds . It is due to fewer hydrogen bonds made by them.

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Gina looks at the architectural plan for a four-walled roomie the walls meet each other at right angles. The length of one wall is 17 inches. The length of the diagonal floor of the room in the plan is approximately 18.79 inches. Is the room in the shape of a square? Explain how you determined your answer. Show your work.

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Gina looks at the architectural plan for a four-walled roomie the walls meet each other at right angles. The length of one wall is 17 inches. The length of the diagonal floor of the room in the plan is approximately 18.79 inches. Is the room in the shape of a square? Explain how you determined your answer. Show your work.

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A geographer would most likely use GPS for which task? to provide detailed information about a location to study the ocean floor to determine whether or not a community needs to build a new school to chart the growth of a city

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Natural Forces Affecting the Driver:

1. While the car stops, the person continues moving the way that the car were moving and then hits the obstacle in the car or the person can be thrown out of the vehicle. If the person wears belt, he will stop moving with the vehicle and won’t hit the obstacle.

2. We count approximate kinetic energy using the formula K = v^2. So the vehicle which is moving at 30 mph will have four times less kinetic energy than vehicle which is moving at 60 mph. If they have the same road conditions, the breaking distance will be four times as great for the car moving twice as fast.

3. Kinetic energy depends on object’s mass and velocity and it has direct relationship with the stopping distance. The lesser mass of the vehicle = the lesser kinetic energy and lesser stopping distance. => If both vehicles have the same velocity, then small vehicle has lesser kinetic energy than large vehicle.

4. We know that kinetic energy has this relationship with velocity K = v^2. So the best way to prepare to enter sharp curves in the roadway is to lower the speed. The most appropriate speed is 20-30 mph, but it depends on road conditions and car’s breaks condition.

5. Car crashes can happen with everyone so the best way is to be prepared. First the driver should wear a seatbelt while he’s driving. He should check his tires and breaks condition regularly. And also it’s important to slow down the vehicle while entering sharp curves. Without following these rules, the driver can get catastrophic injuries in a car crash.

Signs, Signals, and Pavement Markings: 

1. It doesn’t matter where you go. All you need is to learn highway code. It’s very different to know the meanings of every road sign. Also, it’s necessary to check your car’s conditions and you should take some spare parts for your car in case of accidents. So wherever you go, it’s important to be prepared.

2. You should stop before crossing and take few minutes to make sure there is no train approaching. If there is no train approaching, you can pass a railroad crossing. If you see approaching train, you should wait until it will pass a railroad crossing.

3. You should stop before the lights and wait to check the traffic movement and signs. Make sure that everything is safe and pass the intersection. Don’t move fast to avoid accidents.

4. Flashing yellow light means that it’s not necessary to stop but you should to pay attention on the traffic movement. So it would be better to yield before the lights and make sure if it’s safe to move. After that you can cross the intersection.

5. The line change means that the lane changes and you can’t cross solid lines. Pay more attention on road marking because it shows how you should behave on the road or highway.

6. As you approach the next exit and  your passengers need to use the restroom and get some food, you should look for green signs which indicate food and rest stops. You should to slow down if you don’t want to skip the sign.

7. When you take the exit ramp off the expressway and merge onto the next road, you see yellow lines dividing the roadway which indicates that there is oncoming traffic and this is a two-way highway. 

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A worker does 500 J of work on a 10 kg box.If the box transfers 375 J of heat to the floor through the friction between the box and the floor,what is the velocity of the box after the work has been done on it?

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The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies. 

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface. 

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h. 

So the time for the pencil and eraser to touch is T=1.3449 hours. 

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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Which of the following is an example of why writing skills are important in the workplace? A. To send e-mails to your crush on the fifth floor B. To convince your boss to give you a promotion C. To IM your friends while at work D. To have your boss understand your reports and e-mails

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Here are a few pointers; hope this is useful)

Ovation-by definition- is show of appreciation from an audience, for a person’s accomplishments or flaw.

“Everyone deserves a standing ovation because we all overcometh the world.”

A person’s accomplishment could be how they made a positive change in this world, strong leadership- that makes them a effective leader or simply helping others. A person’s flaw- mistakes in life, sin or even guilt should also be considered an appreciation- an ovation for representing mankind’s flaw and that humanity makes mistakes, fulfilling at least one deadly sin such as greed, lust, selfishness etc.

Thus, regardless of a person’s achievement or flaw- a person deserves an applause for, not the least, living in this society and this world that we are all living together and dying together.

That was just the introduction.. the best part is yet to come.. now it’s your turn!!

Here are other pointers to talk about in your essay:

Shakespeare’s famous line “All the World’s a stage. That agrees with your line: “Everybody deserves a standing ovation…”

Shakespeare explains that men and women are like players: they live, and die, some being celebrated and some forever living in solitude till their death. Shakespeare states the world is a “stage” which symbolizes that mankind is in its peak. The world is changing everyday: little by little and humanity is falling behind.
Due to our world turning into machinery: factories, an automotive future: where humans only job to live (entrance) and to die (exit) the famous humans remembered and the flawed not recalled.

This is according to Shakespeare’s imagery.

I don’t know what grade your in, but I think simplifying Shakespeare’s word of mouth in your essay would be handy and useful as it has strong references of your quote, and agrees strongly in your essay.

Hope this helps 🙂

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Sand is supplied to the California coastal region primarily by: • (a)Coastal erosion • • (b)Local biological activity • • (c)Rivers that flow from the Sierra-Nevada mountains •(d)Ocean floor upwelling

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Natural Forces Affecting the Driver:

1. While the car stops, the person continues moving the way that the car were moving and then hits the obstacle in the car or the person can be thrown out of the vehicle. If the person wears belt, he will stop moving with the vehicle and won’t hit the obstacle.

2. We count approximate kinetic energy using the formula K = v^2. So the vehicle which is moving at 30 mph will have four times less kinetic energy than vehicle which is moving at 60 mph. If they have the same road conditions, the breaking distance will be four times as great for the car moving twice as fast.

3. Kinetic energy depends on object’s mass and velocity and it has direct relationship with the stopping distance. The lesser mass of the vehicle = the lesser kinetic energy and lesser stopping distance. => If both vehicles have the same velocity, then small vehicle has lesser kinetic energy than large vehicle.

4. We know that kinetic energy has this relationship with velocity K = v^2. So the best way to prepare to enter sharp curves in the roadway is to lower the speed. The most appropriate speed is 20-30 mph, but it depends on road conditions and car’s breaks condition.

5. Car crashes can happen with everyone so the best way is to be prepared. First the driver should wear a seatbelt while he’s driving. He should check his tires and breaks condition regularly. And also it’s important to slow down the vehicle while entering sharp curves. Without following these rules, the driver can get catastrophic injuries in a car crash.

Signs, Signals, and Pavement Markings: 

1. It doesn’t matter where you go. All you need is to learn highway code. It’s very different to know the meanings of every road sign. Also, it’s necessary to check your car’s conditions and you should take some spare parts for your car in case of accidents. So wherever you go, it’s important to be prepared.

2. You should stop before crossing and take few minutes to make sure there is no train approaching. If there is no train approaching, you can pass a railroad crossing. If you see approaching train, you should wait until it will pass a railroad crossing.

3. You should stop before the lights and wait to check the traffic movement and signs. Make sure that everything is safe and pass the intersection. Don’t move fast to avoid accidents.

4. Flashing yellow light means that it’s not necessary to stop but you should to pay attention on the traffic movement. So it would be better to yield before the lights and make sure if it’s safe to move. After that you can cross the intersection.

5. The line change means that the lane changes and you can’t cross solid lines. Pay more attention on road marking because it shows how you should behave on the road or highway.

6. As you approach the next exit and  your passengers need to use the restroom and get some food, you should look for green signs which indicate food and rest stops. You should to slow down if you don’t want to skip the sign.

7. When you take the exit ramp off the expressway and merge onto the next road, you see yellow lines dividing the roadway which indicates that there is oncoming traffic and this is a two-way highway. 

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About 40 j is required to push a crate 4 m across a floor. if the push is in the same direction as the motion of the crate, the force on the crate is about

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Answer:

a) The time the police officer required to reach the motorist was 15 s.

b) The speed of the officer at the moment she overtakes the motorist is 30 m/s

c) The total distance traveled by the officer was 225 m.

Explanation:

The equations for the position and velocity of an object moving in a straight line are as follows:

x = x0 + v0 · t + 1/2 · a · t²

v = v0 + a · t

Where:

x = position at time t

x0 = initial position

v0 = initial velocity

t = time

a = acceleration

v = velocity at time t

a)When the officer reaches the motorist, the position of the motorist is the same as the position of the officer:

x motorist = x officer

Using the equation for the position:

x motirist = x0 + v · t (since a = 0).

x officer = x0 + v0 · t + 1/2 · a · t²

Let´s place our frame of reference at the point where the officer starts following the motorist so that x0 = 0 for both:

x motorist = x officer

x0 + v · t = x0 + v0 · t + 1/2 · a · t²      (the officer starts form rest, then, v0 = 0)

v · t = 1/2 · a · t²    

Solving for t:

2 v/a = t

t = 2 · 15.0 m/s/ 2.00 m/s² = 15 s

The time the police officer required to reach the motorist was 15 s.

b) Now, we can calculate the speed of the officer using the time calculated in a) and the  equation for velocity:

v = v0 + a · t

v = 0 m/s + 2.00 m/s² · 15 s

v = 30 m/s

The speed of the officer at the moment she overtakes the motorist is 30 m/s

c) Using the equation for the position, we can find the traveled distance in 15 s:

x = x0 + v0 · t + 1/2 · a · t²

x = 1/2 · 2.00 m/s² · (15s)² = 225 m

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A woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the angle of elevation is 51°. she rides the elevator up three floors (60 feet) and finds that the angle of elevation to the top of the building across the street is 34°. how tall is the building across the street? (round to the nearest foot.)

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You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

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Well into the twentieth century, many scientists believed the ocean floor was

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Well which one tends to live around deep waters like the open ocean?

Frogs are amphibians, meaning they need land. The open ocean does not have land.

Dolphins live in and travel around the ocean, not needing land and capable of swimming great depths so they are capable of living in the open ocean.

Alligators live in areas with shallow waters where they can cool down and hide to capture unsuspecting prey. They need to breathe every now and then and even though they are fantastic swimmers in rivers, they can’t go too deep. They also need land to lay their eggs and mate, so the open ocean is not the best option for an alligator.

Hippopotami also live in shallow water like alligators. And like alligators, they need to breathe every now and then and they can’t go too deep in water. Rivers are great for them, but they won’t last too long in an open ocean.

Thus, the organism most likely adapted to the open ocean are dolphins.

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You are a member of Congress and your aide reports that unemployment continues to rise. You are due to report to the floor to vote on several bills. To address unemployment, you vote for the proposed bill that aims to A. increase spending on grants for small businesses B. increase taxes on large corporations C. regulate unemployment offices D. regulate cell phone towers

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You are a member of Congress and your aide reports that unemployment continues to rise. You are due to report to the floor to vote on several bills. To address unemployment, you vote for the proposed bill that aims to A. increase spending on grants for small businesses B. increase taxes on large corporations C. regulate unemployment offices D. regulate cell phone towers

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Two hikers on opposite sides of a canyon each stand precisely 525 meters above the canyon floor. they each sight a landmark on the canyon floor on a line directly between them. the angles of depression from each hiker to the landmark meter are 37° and 21°. how far apart are the hikers? round your answer to the nearest whole meter.

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You need to determine the number of ways in which 30 competitors from 50 can qualify. First, you have to realize that the order is irrelevant, that is: it is the same competitor_1, competitor _2, competitor _3 than competitor_3, competitor_2, competitor_1, or any combination of those three competitors.

So, the number of ways is which 30 competitors from 50 can qualify is given by the formula of combinations, which is:

C (m,n) = m! / (n! * (m -n)! )

=> C (50,30) = 50! / (30! (50 – 30)! ) = (50!) / [30! (50 – 30)!] = 50! / [30! 20!] =

 = 47,129,212,243,960 different ways the qualifiying round of 30 competitors can be selected from the 50 competitors.

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What is the climax of chapter IV of The Story of My Life? A. Helen lies in bed at night and, for the first time, is excited about what will happen tomorrow B. Helen receives a new doll that was made for her by the children at the Perkins Institution. C. Helen throws the new doll onto the floor in anger and frustration, smashing it into pieces. D. Helen feels water on her hands and makes a connection between objects and language.

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Answer:

Henri Rousseau’s Portrait of a Woman

Explanation:

Magical Realism finds precedent in eighteenth-century Gothic novels, but also connects with sixteenth-century Baroque or Surrealism, almost contemporary in the early twentieth century.

Among the most striking features of this movement, we find the blend of realism with pure unreality that is observed as normal, with the integration of magical elements without seeming extraordinary.

These works do not explain the supernatural elements and are narrated as something natural, with characters unaware of their transcendent dimension. In addition, death has paramount value in the relativistic discourse of truth, with a metaphysical focus on space and time and an intimate atmosphere that blends characters with myths, legends, and natural cultures.

Henri Rousseau’s Portrait of a Woman is considered one of the first magical realistic stories.

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Ivan pushes a dresser with full drawers across his carpeted floor. What could Ivan do to reduce the amount of friction between the dresser and the floor?

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The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies. 

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface. 

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h. 

So the time for the pencil and eraser to touch is T=1.3449 hours. 

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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A crate at rest applies a force of 147 newtons on the floor. If the coefficient of static friction is 0.3, what is the maximum force of friction that resists the movement of the crate?

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b. Objects W and Y have balanced forces, and objects X and Z have unbalanced forces.

Explanation:

An object is said to have balanced forces if the resultant of the forces acting on it is zero. This situation occurs, for instance, when the sum of the forces on the vertical direction is zero and the sum of the forces on the horizontal direction is zero as well.

For the objects in the table, we see that:

– Object W: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (30 N), so they cancel each other. Also, the resultant on the horizontal direction is zero, because we have two opposite forces with same magnitude (20 N), so they cancel each other.

– Object X: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (15 N), so they cancel each other. However, the resultant on the horizontal direction is NOT zero, because we have two opposite forces but with different magnitude (35 N and 25 N), so they do not cancel each other, and they make a net force of 35 N – 25 N=10 N.

– Object Y:  the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (60 N), so they cancel each other. Also, the resultant on the horizontal direction is zero, because we do not have forces along this direction.

– Object Z: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (45 N), so they cancel each other. However, the resultant on the horizontal direction is NOT zero, because the net force is 22 N, not balanced from the other direction.

Therefore, objects W and Y have balanced forces, and objects X and Z have unbalanced forces.

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An 83-year-old male has fallen down five stairs to the floor below. he hit his head and is complaining of a headache. when getting a history from this patient, what question should you ask first?

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There can be
different techniques to practice communication in nursing but the essence of it
is only derived from the following:

1.)   
Communication must be patient-friendly.

2.)   
Communication must be time-sensitive and complete

3.)   
Communication must provide comprehensive
information

4.)   
Communication must cover all discipline in
healthcare

5.)   
Communication must have no errors/failures

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A 68 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 158 above the horizontal. (a) if the coefficient of static friction is 0.50, what minimum force magnitude is required from the rope to start the crate moving? (b) if mk 0.35, what is the magnitude of the initial acceleration of the crate?

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First, illustrate the problem through a force body diagram a shown in the figure. N denotes for normal force, F for the force required to move the crate, W denotes as the weight (Wx and Wy are its vector components), and f is the frictional force which acts opposite to the direction of the crate. The supplemental angle is 22. When you use the trigo identities like sin or cos, you can either use 22 or 158. The answer would be the same.

a.) Applying Newton’s 2nd law: F= ma

Summation of forces along the y-direction:
 F = 0 (objects at rest)
 N + Wy = 0
 N + 68(9.81)(sin 22) = 0
 N = 250 Newtons

Summation of forces along the x-direction
F = 0
f + F + 68(9.81)(cos 22) = 0

The frictional force’s formula is f = ∪s*N (if at rest) = ∪k*N (if moving)
where ∪ is the coefficient of friction (s for static and k for kinetic)

Thus, the equation becomes

0.5(N) + F + 68(9.81)(cos 22) = 0
0.5(250) + F + 68(9.81)(cos 22) = 0
F = 743.45 Newtons

b.) Same procedure but only differs in f = ∪k*N, where ∪k = 0.35. Then,

0.35(N) + F + 68(9.81)(cos 22) = ma (for objects moving)
0.35(250) + 743.45 + 68(9.81)(cos 22) = 68(a)
a = 21.32 m/s^2

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Evan was in his bedroom when he heard the sound of breaking glass. He went out to the kitchen to see a vase broken on the floor and his dog walking away. Evan said “the dog broke the vase!” This statement is an A. observation because he knows that his dog broke the vase. B. observation because he heard the vase break before he came into the room. C. inference because he formed a logical conclusion based on the evidence. D. inference because he is blaming the dog without any proof.

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boxed{  1,3 times 10^{22}  carbon  atoms  }

Further explanation

Diamond is 100% pure elemental carbon, compressed to its crystal form, under extreme heat and pressure deep within the Earth. The symbol for carbon is C.

Step-1: convert carat to grams

The carat represent the unit of weight for diamonds and other gemstones. From several sources, it is known that 1-carat = 0.2 grams of carbon atoms.

Converting 1.3-carat to several grams of carbon atoms

boxed{  1.3-carat times frac{0.2  grams}{1  carat} = 0.26  grams  }

So 1.3-carat diamonds are equal to 0.26 grams of carbon atoms.

Step-2: convert grams to moles

From the periodic table of elements, we know that the atomic mass of carbon is 12 g/mol. The relationship between mole, gram, and atomic mass is

boxed{  moles = frac{grams}{atomic  mass}}

Converting 0.26 grams to moles

boxed{  moles = frac{0.26  grams}{12  g/mol}}

We obtain 0.0217 moles of carbon atoms.

Final step: convert mole to atoms

The relationship between mole, the number of atoms (N), and Avogadro’s number is

boxed{ moles = frac{N}{6.022 times 10^{23}} rightarrow N = moles times 6.022 times 10^{23}  }

N = 0.0217 times 6.022 times 10^{23}

Rounding to 2 decimal places to produce 0.13 times 10^{23} and in the form of scientific notation is boxed{ 1.3 times 10^{22}  carbon  atoms}

So there is boxed{ 1.3 times 10^{22}  carbon  atoms} are there in a 1.3-carat diamond.

Quick way

boxed{ frac{N}{6.022 times 10^{23}} = frac{grams}{atomic  mass}  }

Rearrange it

boxed{ N = 6.022 times 10^{23} times frac{grams}{atomic  mass}  }

N = 6.022 times 10^{23} times frac{1.3 times 0.2}{12}  }

boxed{ N = 1.3 times 10^{22}  carbon  atoms}

Learn more

  1. General issues about types of reactions, mixtures and compounds brainly.com/question/2327210
  2. How many atoms of copper are present in one mole of copper? brainly.com/question/11813126
  3. Which unit is used for measuring atomic mass? brainly.com/question/11267881

Keywords: how many, carbon atoms, in a 1.3-carat diamond, a form of pure carbon, elemental, 100%, 1-carat = 0.2 grams, moles, atomic mass, avogadro’s number, converting

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An elevator on the 10th floor goes down 9 floors. Then it goes up 19 floors, down 3, and finally down 12. What floor does it end up on? Write an equation to show how you found your answer(24 Points

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Answer:

Center (-7,-1)

radius: 6

Step-by-step explanation:

We need to remember that the formula of a circle with center in (h,k) and radius r is: (x-h)² + (y-k)² = r²

In this problem we have the equation x² + y² +14x +2y +14 = 0 and we need to transform it into the formula (x-h)² + (y-k)² = r²

First we’re going to rearrange the terms so the terms with x are together and the terms with y are together. We are going to move the independent term (The one without a letter, 14 in this case, to the right side of the equation)

x² + y² +14x +2y +14 = 0

(x² + 14x) + (y² + 2y) = -14

Now we need to complete to perfect square trinomials.  To know which term we need to add we’re going to take the coefficient of the term with the x, divide it by two and then square it)

Example: for the term 14x we are going to do 14/2 = 7 and then we’re going to make 7² = 49.

For the term 2y we do 2/2 = 1. 1² = 1.

So we get the next two perfect square trinomials:

(x² + 14x +49) + (y² + 2y +1)

Back to our equation, we need to add the 49 and the 1  to the other side so the equation still holds:

(x² + 14x +49) + (y² + 2y +1) = -14 +49 +1

(x² + 14x +49) + (y² + 2y +1) = 36

The parenthesis can be written as squared binomials:

(x + 7)² + (y +1)² = 36.

Now this formula is written as (x-h)² + (y-k)² = r²

Therefore, h = -7, k = -1 and r²= 36⇒ r = 6

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