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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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Melting, as igneous rock is magma or lava that has cooled and hardened.
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A 60 kg skier starts from rest at the top of a frictionless slope of height of 35 meters. The velocity at the bottom is v. If a
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Answer:

Explanation:

Speed of skier without parachute

= √ 2gh

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= 26.2 m / s

Speed of skier with parachute

net force downwards

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= 388 N

acceleration = 388 / 60

a = 6.47 m / s

v = √ 2ah

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3 years ago
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206Pb = 1.342 x10^22 atoms 

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4 0
3 years ago
Can someone help me with this Physics question please?
strojnjashka [21]

Answer:

Explanation:

The formula for this, the easy one, is

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N=48.0(\frac{1}{2})^{\frac{49.2}{12.3} and simplifying a bit:

N=48.0(.5)^4 and

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3 years ago
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In a region of space where gravitational forces can be neglected, a sphere is accelerated by a uniform light beam of intensity 8
BlackZzzverrR [31]

Answer:

The correct answer is B

Explanation:

To calculate the acceleration we must use Newton's second law

      F = m a

      a = F / m

To calculate the force we use the defined pressure and the radiation pressure for an absorbent surface

       P = I / c        absorbent surface

       P = F / A

       F / A = I / c

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The area of ​​area of ​​a circle is

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We replace

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Let's calculate

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Density is

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Let's calculate the acceleration

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The correct answer is B

4 0
3 years ago
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