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vazorg [7]
4 years ago
8

A woman is standing on a steep hillside in the rain and is not moving. A

Physics
1 answer:
NemiM [27]4 years ago
3 0

Answer:

The correct option is;

A. The component of the woman's weight along the hillside is larger than the kinetic friction between the woman and the ground

Explanation:

Given that the coefficient of static friction is always larger than the coefficient of kinetic friction, we have that before the wind blew, the component of the woman's weight along the hillside was lesser than the static friction between  the woman and the ground, when the wind blew the total force of the wind and the component of the woman's weight put her into motion such that the acting frictional force was then the kinetic frictional force which was lesser than the kinetic frictional force so the woman continues to slide down the hillside without the wind.

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Helping verbs come before the main verb, the main verb in the sentence is repair therefor the helping verb would be could.
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A string under a tension of 50.4 N is used to whirl a rock in a horizontal circle of radius 2.51 m at a speed of 21.1 m/s. The s
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Answer:

619.8 N

Explanation:

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T=m\frac{v^2}{r}

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At the beginning,

T = 50.4 N

v = 21.1 m/s

r = 2.51 m

So we can use the equation to find the mass of the rock:

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Later, the radius of the string is decreased to

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While the speed is increased to

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Substituting these new data into the equation, we find the tension at which the string breaks:

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