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What is the density of a block of aluminum that has mass 27 grams of and a volume 10 cm3? 2.7 g/cm3 270 g/cm3 0.37 g/cm3 0.37 cm3/g

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What is the density of a block of aluminum that has mass 27 grams of and a volume 10 cm3? 2.7 g/cm3 270 g/cm3 0.37 g/cm3 0.37 cm3/g

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A student made a model of isostasy by placing a block of wood in a beaker of water. What does the water in the beaker represent in the model? A.A glacier B.Earth's crust C.Earth's mantle D.A rebound

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A student made a model of isostasy by placing a block of wood in a beaker of water. What does the water in the beaker represent in the model? A.A glacier B.Earth’s crust C.Earth’s mantle D.A rebound

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Many different types of mutations can occur within the body. Sickle cell anemia is a disease that occurs when a mutation in a base pair of the hemoglobin beta gene causes a single replacement of the amino acid glutamic acid by the amino acid valine. As a result of this mutation, the individual’s blood cells take on a sickle shape under certain conditions and form clusters that can block blood vessels and cause organ damage. Which type of mutation causes sickle cell anemia? A)silent B)missense C)insertion D)frameshift

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The right option is; B)missense

Missense mutation is the type of mutation that causes sickle cell anemia

A missense mutation is a type of nonsynonymous substitution in which the change of a single nucleotide (base pair) influences the genetic code and results in a codon that code for a different amino acid. This type of mutation can affect the function of the protein, and it is responsible for human diseases such as, sickle-cell anemia and Epidermolysis bullosa.

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What was one factor that caused the British to surrender at Yorktown? British soldiers were suffering from disease and refused to fight. George Washington’s soldiers outnumbered the British soldiers two to one. British troops received a false message from the king that the war was over. French and American forces joined together to block the British from getting supplies. Question 13(Multiple Choice Worth 1 points)

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Such diverse historical figures as Jesus Christ, napoleon, Julius Caesar, Adolf Hitler, Winston Churchill, Franklin Roosevelt, Martin Luther King, Jr., and Cesar Chavez, are examples of Charismatic leaders. The reason is that they were able to inspire and motivate many followers. They were all good communicators and convinced the audience about their ideas and opinions.

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Block a, with a mass of 2.0kg, moves along the x axis with a velocity of 5.0m/s in the positive x direction. it su?ers an elastic collision with block b, initially at rest, and the blocks leave the collision along the x axis. if b is much more massive than a, the speed of a after the collision is:

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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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How many grams of hydrochloric acid will react completely with a block of gold that is 3.2 cm by 3.8 cm by 2.8 cm, if the density of gold is 19.3 g/ml?

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This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

Answer: 30.6 torr

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At a physics convention, 10 companies set up equal sized square booths in a row along one wall of the convention center. The booths are adjacent to each other and a 4-ft wide walkway surrounds the block of booths on three sides. The total area of the booths and walkway is 2300 ft2. What is the side length of each booth?

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Answer:  The correct option is (C). 10 = square root of the quantity of x minus 8 all squared plus y minus 9 all squared

Step-by-step explanation:  Given that the segment AB has point A located at (8, 9). The distance from A to B is 10 units.

We are to select the correct option that could be used to calculate the coordinates for point B.

Let, (x, y) be the co-ordinates of point B.

According to distance formula, the distance between two points (a, b) and (c, d) is given by

d=sqrt{(c-a)^2+(d-b)^2}.

Therefore, the distance between the points A(8, 9) and B(x, y) is given by

d=sqrt{(x-8)^2+(y-9)^2}.

Since, distance between A and B is 10 units, so

d = 10.

Therefore,

10=sqrt{(x-8)^2+(y-9)^2}.

Thus, the correct statement is

10 = square root of the quantity of x minus 8 all squared plus y minus 9 all squared.

Option (C) is correct.

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A business letter is typically written in _______. a free-flow format an informal outline a block format a modified outline

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Answer: The correct answer is :  a  block format

 

Explanation:    The typeface used for business correspondence is standard. Most business letters will involve routine messages that carry good or neutral news. The objective of business letters is to share neutral, good or negative news. The components of the business letters are: company letterhead, current date, inside address, salutation, body, complimentary close, written signature, and keyboarded name / title. additional components include attention line, subject line, enclosure notation, copy notation, and postscript.

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How might a substrate of the citric acid cycle block respiration when it is present in great excess

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How might a substrate of the citric acid cycle block respiration when it is present in great excess

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A/n _______ is a type of mass movement that occurs when a thin block of soil, rock, and debris separates from the underlying bedrock.

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First thing to do, you need the specific heats of the substances in the system and the heat of fusion of ice. From literature, they are as follows:

Copper = 0.385 kJ/kg.°C
Lead = 0.127 kJ/kg.°C
Water = 4.181 kJ/kg.°C
heat of fusion of ice = 333.6 kJ/kg 

Next, we let the final temperature be T in units of °C. 

The ice and water are in equilibrium thermally, so the temperature should be 0°C. By the law of conservation of energy,

Heat lost = Heat gained

Heat lost by lead = [ 0.75 (0.127 ) (255-T) ]kJ 

Heat from the melting ice = [(0.018 ) 333.6 ]kJ 
Heat gained from 0 to T = [(4.181) (T) (0.16 + 0.018)] kJ 
Heat to raise the calorimeter to T = 0.0385T]  kJ

Equating heat lost and heat gain, we can calculate for T. Therefore,

(0.75) (0.127) (255-T) = 6.0048 + 0.7442T + 0.0385T
T = 20.83 C 

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Which statement is the most important reason for warming up and cooling down? It reduces your risk of injury. It increases response time. It improves immune function. It stabilizes you emotionally. 1 points Question 2 Which term describes the promotion of health products, services, or practices of questionable safety, effectiveness, or validity for an intended purpose? quackery sham scam fishing 1 points Question 3 Which precaution should you take to protect yourself from the consequences of too much sun? Wear a hat, such as a baseball cap. Apply sunscreen only during the summer. Wear sunglasses that block at least 50 percent of the sun’s ultraviolet rays. Put on sunblock 30 minutes before going in the sun. 1 points Question 4 Which is the more questionable phrase when used in advertising? secret formula FDA-approved medically proven variation in efficacy 1 points Question 5 Which statement is true of cooling down after physical activity? A cool-down is a period of semistrenuous activity after physical activity. Cooling down increases blood flow to the muscles and decreases body temperature. Cooling down increases the lactic acid in your muscles, helping to protect them from injury. You should cool down for about 5 to 10 minutes after being physically active. 1 points Question 6 Which statement about dressing for physical activity is true? Clothes should be tight and lie flat against skin to prevent chafing. Rubberized or plastic clothing prevents you from sweating. In general, you should wear heavier weight clothing to keep muscles warm and flexible. You should wear a hat in cold weather and in sunny weather. 1 points Question 7 Which question is not relevant when evaluating advertisements? What is the product’s purpose? Who is the target audience? What is being advertised? How expensive is the product? 1 points Question 8 Which characteristics should you look for when choosing a shoe for physical activity? a sole that is exactly the same height at the heel and the toe a cushioned heel cup to protect the heel from impact a firm, molded inside to stabilize the foot a sole at least as wide as the upper part of the shoe 1 points Question 9 Which statement is true of electrolytes? The major electrolytes lost in sweat are hydrogen, potassium, and iron. Electrolytes help carry electrical impulses from one cell to another. Electrolyte replacement during physical activity is beneficial. Electrolyte concentrations decrease due to the loss of body water. 1 points Question 10 Which statement is true of warming up before physical activity? A warm-up is a period of semistrenuous activity that prepares the body for physical activity. A warm-up increases the amount of oxygen to your brain by raising your body temperature. You should warm up for about 15 to 20 minutes before being physically active. Stretching is important for flexibility and keeps your muscles from tightening up during physical activity.

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This is completely false.

Legal Medications can come with many risks.

For example, oxycodone, a painkiller, is very similar to heroin in the risk of addictiveness as well as abusability.

The same being with amphetamines (adderall/dexedrine) to meth.

Just because it is legal, does not mean it is any safer or more dangerous.

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Which word best describes Michelle Obama’s tone in this statement? “We as parents are our children’s first and best role models, and this is particularly true when it comes to their health. We can’t lie around on the couch eating French fries and candy bars, and expect our kids to eat carrots and run around the block. But too often, that’s exactly what we’re doing.”

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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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An apa-style block quote must be enclosed in quotation marks. a. True b. False

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This sounds like an essay question, i’ll give you some possible points and quotations, maybe some ideas on context, but it’s up to you to develop your own thesis and opinion on this. 

f. scot fitzgerald critiques the idea of the american dream (like many other classic authors) through the situations of the characters.

jay gatsby is able to aquire an enormous amount of wealth throughout his life, but he is unable to penetrate the upper class. he ends up being killed after tangling in that crowd for too long

possibly mention the context of the 20s. a tumultuous time following WW1, increase in immigration as well as womens rights and the massive economic boom. (with the crash looming in 1929) there was a belief that anyone could ‘strike it rich’ like gatsby did.

george and myrtle wilson were middle class people looking to improve their life, and achieve the american dream

daisy is the ultimate, perfect example of the american dream.

the darkest secret at the end, gatsby’s wealth didn’t come from work, it came from a life of crime. fitzgerald is basically saying american dream is actually a lost promise. 

also underlying greed strewn throughout the novel, and affairs which tear couples apart. 

quote: 
‘But I didn’t call to him for he gave a sudden intimation that he was content to be alone–he stretched out his arms toward the dark water in a curious way, and far as I was from him I could have sworn he was trembling. Involuntarily I glanced seaward–and distinguished nothing except a single green light, minute and far away, that might have been the end of a dock.’ 

very key symbol of the green light, and gatsby reaching out to something (the american dream) that he cannot aquire. 

hope that helps 🙂 feel free to disagree and develop your own opinions on this subject.

if you want more info, there are plenty of articles full of quotes, examples and ideas on the internet. reading critical perspectives of the great gatsby are also good if you’re willing to look 😀

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Some antidepressants block the reuptake or breakdown of both seratonin and other nuerotransmitter, norepinepherine. these antidepressants are called

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Some antidepressants block the reuptake or breakdown of both seratonin and other nuerotransmitter, norepinepherine. these antidepressants are called

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The author of a memo typically signals his or her approval of the memo by A. placing a checkmark next to his or her name. B. using reference initials. C. initialing his or her name in the heading. D. formally signing his or her name in a signature block.

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The author of a memo typically signals his or her approval of the memo by A. placing a checkmark next to his or her name. B. using reference initials. C. initialing his or her name in the heading. D. formally signing his or her name in a signature block.

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Is a fundamental building block of a relational database because this object stores all of the data

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Related questions


Primary data is _____ and _____ to gather than secondary data.

I think that there should be an options to choose, because it’s difficult to give an accurate answer and complete this sentence. But I’ll try. Here is my answer: Primary data is more expensive and less quickly to gather than secondary data.

ANSWERED AT 12/10/2019 – 08:52 PM


QUESTION POSTED AT 12/10/2019 – 08:52 PM


Among the eight unique features of​ e-commerce, which is related to the ability to interact with web technology​ everywhere?

#1) ​Among the eight unique features of​ e-commerce, which is related to the ability to interact with web technology​ everywhere?
Answer: The answer is Online shopping web sites for retail sales direct to consumers. Online shopping is a form of electronic commerce which allows consumers to directly buy goods or services from a seller over the Internet using a web browser. Consumers find a product of interest by visiting the website of the retailer directly or by searching among alternative vendors using a shopping search engine, which displays the same product’s availability and pricing at different e-retailers.

ANSWERED AT 12/10/2019 – 12:20 PM


QUESTION POSTED AT 12/10/2019 – 12:20 PM

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Which of the following best explains why deforestation increases the risk of floods in an area? a. Tree leaves catch and retain rain water. b. Trees block the free flow of water. c. Deforestation increases precipitation. d. Tree roots improve soil water retention.

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Velocity of the boat relative to the stream = b

Velocity ot the boat downstream = b + 8

Velocity of the boat upstream = b – 8

v = d / t => t = d / v

Time downstream = 80 /  [b + 8]

Time upstream = 80 / [b – 8]

Total time 80 / [b + 8] + 80 / [b – 8] = 17/3 … [ I converted 5 h + 20 m to 1/

 hours]

Now you have to solve

 80 / [b + 8] + 80 / [b – 8] = 17/3

80[b – 8] + 80[b + 8] = [17/3](b+8)(b-8)

Divide by 80

b – 8 + b + 8 = [17/(80*3)] (b^2 – 64)

2b = [17/240]b^2 – 64*17/240

0.0708b^2 -2b – 4.53333 = 0

Use the quadratic formula to solve. You will obtain b = – 2.11 and b = 30.36

Only the positve result make sense. Then the answer is b = 30.36 mph.

Let’s verify that that result is coherent:

Downstream velocity = 30.36 + 8 = 38.36 mi / h
Downstream time = 80mi / 38.36 mi/h = 2.085 h

Upstream velocity = 30.36 – 8 = 22.36 mi / h
Upstream time = 80 mi / 22.36 mi/h = 3.578 h

Total time = 2.085 h + 3.578 h = 5.663 h, which is 5 h + 20 min; then, the result is correct.
 

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