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Effectus [21]
3 years ago
8

A block moving to the right on a level surface with friction is pulled by an increasing horizontal force also directed to the ri

ght. As the applied force increases, which of the following is true of the normal force and the frictional force on the block? Normal forceFrictional Force a.IncreasesIncreases b.IncreasesRemains Constant c.Remains ConstantIncreases d.Remains ConstantDecreases e.Remains ConstantRemains Constant
Physics
1 answer:
KengaRu [80]3 years ago
6 0

Answer:

e) True  Yes both are constant

Explanation:

Let us propose the solution of the problem before reviewing the statements, we use Newton's second law

       F - fr = m a

      N- W = 0

      N = mg

The equation for the force of friction is

     fr = μ N

     F - μ mg = m a

     F = m (a- μ g)

Now let's review the claims

.a) False. Normal force and friction are constants.

.b) False. Both are constant.

.c) False. Both are constant.

d.) False

e) True  Yes both are constant

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An object is thrown upward with some velocity. If the object rises 77.5 m above the point of release, (a) how fast was the objec
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Answer:

v_o=39\ m/s\\t_m=4\ s

Explanation:

<u>Vertical Launch Upwards</u>

In a vertical launch upwards, an object is launched vertically up from a height H without taking into consideration any kind of friction with the air.

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\displaystyle h_m=H+\frac{v_o^2}{2g}

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(a)

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(b)

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In the United States, where can volcanoes be found?
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The compound ethylene (C2H4) is represented by this diagram. What statement best describes the arrangement of the atoms in an et
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<u>Explanation:</u>

Ethylene is a compound given by the chemical formula H_2C=CH_2.

The bond present between hydrogen and carbon atoms or carbon and carbon atoms are covalent bonds. A covalent bond is formed by the sharing of electrons between the atoms combining.

A double bond is present between carbon and carbon atoms. So 2 pairs of electrons are shared which means in total of 4 electrons are shared.

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