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## ? A body is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150N. What is the tension in each wire?

So, the weight is supported by the tension in the two wires, but only part of the tension goes in holding the body: the vertical component.

If the angle between the ceiling and the wire is 40 deg, then the vertical component is

T_y = T * sin(40),

There are two wires, so together they do

2*T*sin(40)

And all this holds the weight of the body, so:

2*T*sin(40)=150 —-> T = 75/sin(40)~116.68 N,

Notice how it is larger than 150N (both wires is ~ 233 N), as the angle becomes smaller, there is less tension that is vertical, so one needs more tension to make the vertical component as large as (half) the weight of the body

Hope it helps!

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## Which of these statements is correct? A.The introduction of the research paper specifies the focus, purpose, and plan of the paper. B.The introduction of the research paper integrates material from various sources. C.The body of the research paper specifies the focus, purpose, and plan of the paper.

Which of these statements is correct? A.The introduction of the research paper specifies the focus, purpose, and plan of the paper. B.The introduction of the research paper integrates material from various sources. C.The body of the research paper specifies the focus, purpose, and plan of the paper.

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## Mammals lead more active lives than reptiles because mammals have body hair and more efficient hearts and___?

Mammals lead more active lives than reptiles because mammals have body hair and more efficient hearts and___?

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## Identify two long term effect of bulimia? a.weight gain b. fatigue c.gum disease d.healthy body composition

Answer:  Gum disease and b. fatigue

Explanation:

Bulimia refers to eating disorder which makes an individual to eat large quantities of food which makes him or her feels a loss of control over eating. The individual then tries to compensate it by as vomiting or purging, fasting and so on. Its long term effect include: Gum disease and fatigue.  Gum disease refers to infection of the tissues holding the teeth. Fatigue is referred to as a state of extreme tiredness and reduced energy.

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## Your body is approximately _______ percent water. A. 30 B. 45 C. 60 D. 75

Your body is approximately _______ percent water. A. 30 B. 45 C. 60 D. 75

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## Match each disease with a hygiene strategy for preventing it. A.Flu Wash your body regularly. B.Athlete's foot Do not share water bottles. C.Salmonella poisoning Cook meat and poultry thoroughly.

Match each disease with a hygiene strategy for preventing it. A.Flu Wash your body regularly. B.Athlete’s foot Do not share water bottles. C.Salmonella poisoning Cook meat and poultry thoroughly.

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## STIs affect the health of the body only and do not affect the mind beyond the emotional trauma they may cause. Please select the best answer from the choices provided. T F

STIs affect the health of the body only and do not affect the mind beyond the emotional trauma they may cause. Please select the best answer from the choices provided. T F

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## The brain communicates with the rest of your body by _____.

The brain communicates with the rest of your body by _____.

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## What would be an example of spectral evidence in the Salem witch trialsa. a sudden operation visible only to the victim b. a victim feeling a deep cleaner suddenly overtake her body c. voices Whispering into the victims ear d.all of the above

What would be an example of spectral evidence in the Salem witch trialsa. a sudden operation visible only to the victim b. a victim feeling a deep cleaner suddenly overtake her body c. voices Whispering into the victims ear d.all of the above

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## How can a person boost the immune system? Complete full body exercises Target specific muscles groups Do push-ups until fatigued Sleep

I would think it would be full body exercises because you are covering the entire body but I’m not too sure. I can’t really see how it would help your immune system because the immune system is what protects your body from disease, virus, etc…

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## The term anaerobic refers to instances when the body does not take in enough oxygen to meet the needs of an activity true or false

The term anaerobic refers to instances when the body does not take in enough oxygen to meet the needs of an activity true or false

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## Which of the following is a true statement? The rough draft is the final stage of writing before a paper is given to the teacher for grading. It is a good idea to come up with ideas about a topic after you write your rough draft. Rough drafts do not include facts, examples, and details about the main topic of the paper. Rough drafts consist of an introduction, a body, and a conclusion

Which of the following is a true statement? The rough draft is the final stage of writing before a paper is given to the teacher for grading. It is a good idea to come up with ideas about a topic after you write your rough draft. Rough drafts do not include facts, examples, and details about the main topic of the paper. Rough drafts consist of an introduction, a body, and a conclusion

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## In the human body the larynx is attached to the trachea true or false

In the human body the larynx is attached to the trachea true or false

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## Compare energy provided to the body by carbohydrates,proteins,and fats

Carbohydrates (carbs) provide ready energy to the body, and it’s in its quickest useable form. Proteins has the same caloric content per mass as carbs, yet it is not as useable. It takes longer to break proteins down into amino acids then denitrate them into sugar components. Most amino acids we get from protein is used to build more protein for the body. Fats (lipids) pack over twice the amount of energy per mass as carbs, but they are more difficult to transport (because they resist water) and to convert to glucose, due to the long nature of fatty acid chains. But lipids are a fantastic way to store extra calories due to their light density.

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## During the Renaissance, many artists were trying to draw the human body more accurately. Artists like Leonardo studied the skeleton and musculature (the muscle system) to make their paintings and sculptures of the human body more realistic. Leonardo also studied birds and seashells. He conducted in-depth studies of human anatomy, much as doctors did. He filled notebooks with detailed drawings of bones, muscles, and internal organs Which sentence is not part of the focus? A. Artists like Leonardo studied the skeleton and musculature… B. He filled notebooks with detailed drawings… C. He conducted in-depth studies of human anatomy, much as doctors did. D. Leonardo also studied birds and seashells.

During the Renaissance, many artists were trying to draw the human body more accurately. Artists like Leonardo studied the skeleton and musculature (the muscle system) to make their paintings and sculptures of the human body more realistic. Leonardo also studied birds and seashells. He conducted in-depth studies of human anatomy, much as doctors did. He filled notebooks with detailed drawings of bones, muscles, and internal organs Which sentence is not part of the focus? A. Artists like Leonardo studied the skeleton and musculature… B. He filled notebooks with detailed drawings… C. He conducted in-depth studies of human anatomy, much as doctors did. D. Leonardo also studied birds and seashells.

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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

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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## The type of carbohydrate that is useful in moving waste through the body system is:

The type of carbohydrate that is useful in moving waste through the body system is FIBER.  Fiber is a type of carbohydrate that passes through the body undigested.
Fiber is very important to be part of the diet because it
helps regulate the body’s use of sugars, helps to keep hunger and blood sugar in check.
Children and adults need at least 20 to 30 grams of fiber per day for good health
Dietary fibers are found in fruits, vegetables and whole grains.

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## What is an example of how you can be proactive about your personal health and wellness? Know your family health history and use reliable resources to research any family illnesses, because this will help you understand risks and available treatments Schedule regular doctor appointments, because getting checked by the doctor ensures that you will not get sick or contract communicable diseases Get extra sleep on days you don’t exercise, because this will help you keep your body composition in a healthy range and avoid changes in weight Use vitamins and performance-enhancing supplements, because they increase energy levels and help build muscles to keep your body physically fit Question 4(Multiple Choice Worth 1 points)

Your answer is: Know your family health history and use reliable resources to research any family.illnesses because this will help you understand risks and available treatments. By process of deduction, doctor’s appointments cannot perfectly ensure a lack of sickness, increasing sleep has studies that suggest it actually increases chances of weight gain, and performance-enhancing supplements are actually harmful if you don’t need them. Good Luck!

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## Which organizational pattern does the body section follow? select one: a. description b. chronology c. list d. classification?

Which organizational pattern does the body section follow? select one: a. description b. chronology c. list d. classification?

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## In a ____, the loop body executes at least one time because the loop control variable is not tested until after one iteration.

In a stub, the loop body executes at least one time because the loop control variable is not tested until after one iteration.
After one iteration, the loop will measure how much time it needed in order to complete that iteration. The faster the time indicate the faster the processing capability would be

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## The body temperatures of adults are normally distributed with a mean of 98.6° f and a standard deviation of 0.60° f. if 36 adults are randomly selected, find the probability that their mean body temperature is greater than 98.4° f. 0.0228 0.8188 0.9360 0.9772

Here the population standard deviation is 0.60 degree F.  If a sample of 36 adults is randomly selected, that results in a sample standard deviation of 0.60 degree F divided by the square root of 36:  0.10 degree F.

The probability in question is the area under the standard normal probability distribution between 98.4 degree F and infinity, and intuitively you can detect that this will be more than 0.5 (corresponding to 50%).

Convert 98.4 degrees F to a z-score, using the sample standard deviation (0.10 degree F).  That z score is
98.4-98.6
z = ————–   =  -0.20/0.10 = -2
0.10

We need to determine the area under the standard normal curve to the right of z=-2.  Use a table of z-scores to do this, or use your calculator’s built-in probability functions.  My result is 98.21% (corresponding to an area of 0.9821).

With my calculator I can find this probability using the following command:

normalcdf(-2,100000,0.10).

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## Before operating on an unfamiliar body of water why is it important to determine the location of shoaling areas

It is important to determine their location before operating on an unfamiliar body of water because they are often difficult to spot, even with local charts. If you don’t know what you’re doing you can get stuck and that can be a huge problem, so it’s necessary to know what you’re doing and where they are located.

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## _________ is the body mass attributed to non-fat body components, such as bone, muscle, and internal organs.

Lean body mass is the body mass attributed to non-fat body components, such as bone, muscle, and internal organs. In general, lean body mass is the mass of the body excluding the fat. It is important in fitness regimes. Most body builders want to maintain their lean body mass and decrease their body fat.

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## It is important to immobilize an injured limb in order to __________. a. prevent it from being injured further b. prevent infections c. slow the healing process d. allow your body to overcome the shock of the injury please select the best answer from the choices provided.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.

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## Which best describes the role of carbon in the body?

25) Answer is: less metallic and more nonmetallic.

Electronegativity increases from left to right across a period, atoms have tendency to attract electrons.

Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons.

Radioisotope has an unstable atomic nucleus and emit energy and particles when it changes to a more stable form.

Francium (Fr) is element with atomic number 87 (87 protons and 87 electrons).

Boiling is the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

The Celsius scale was based on 0°C for the freezing point of water and 100°C for the boiling point of water at 1 atm pressure.

There are two types of reaction:

1) endothermic reaction (chemical reaction that absorbs more energy than it releases, ΔH>0).

2) exothermic reaction (chemical reaction that releases more energy than it absorbs).

For example, the breakdown of ozone is an endothermic process. Ozone has lower energy than molecular oxygen (O₂) and oxygen atom, so ozone need energy to break bond between oxygen atoms.

The average kinetic energy of molecules depends on the temperature.

As temperature increases, molecules gain more energy from surrounding and move faster.

Kinetic energy (standard unit is the joule J) depends on speed of the molecule.

Solid gains kinetic energy to become a liquid and then becomes a gas.

This was famous Rutherford’s Gold Foil Experiment: he bombarded thin foil of gold with positive alpha particles.

Rutherford observed the deflection of alpha particles on the photographic film.

Alpha particles are helium atom particles, consist of two protons and two neutrons.

According to Rutherford model of the atom: atoms have their charge concentrated in a very small nucleus.

For example, calcium oxide.

Calcium oxide (CaO) has ionic bonds between calcium cations (Ca²⁺) and oxygen anions (O²⁻).

Because it has strong ionic bonds, it has high melting point (around 2600°C).

Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).

32) Answer is: a scientific model.

A scientific model is a representation of an idea, an object, a process or a system that is used to describe and explain phenomena that cannot be experienced directly.

33) Answer is: the superscript is mass number and the subscript is atomic number.

Atomic number(Z) is the number of protons, which is characteristic of a chemical element..

Mass number (A) is the total number of protons and neutrons in a nucleus.