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3 years ago

What two factors affect the force of friction?

Chemistry

2 answers:

Vlad1618 [11]3 years ago

6 0

Answer : Option C) Roughness of the surface and weight of the object.

Explanation : The factors that affect the forces of friction are roughness of the surface and weight of the object.

Friction is the force which resists the relative motion of solid surfaces, fluid layers, and material elements which are sliding against each other.

Friction depends on the normal force and the roughness of the surface which is in contact. When a body is placed on the ground, the mass of the body which is weight = mass x acceleration due to gravity, comes into play for the normal force from the ground. This clearly shows that friction is affected by weight as it depends on the mass of the object.

It also depends partly on the smoothness of the contacting surfaces, if a greater force being applied to move two surfaces past one another then they are rough, if they were smooth less force would have been applied for moving it.

Sav [38]3 years ago

3 0

Roughness of the surface and weight of the object.

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3 years ago

You are given a 2.9237 g sample of a substance with the generic formula MCl2(H2O)6. After completely drying the sample (which me

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Answer:

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Explanation:

Step 1: Data given

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After completely drying the sample (which means removing the 6 moles of H2O per mole of MCl2), the sample weighs 1.5941 g.

Step 2: Calculate mass of water

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Step 3: Calculate moles water

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3 years ago

A certain amount of gas is trapped in a nonrigid container at atmospheric pressure. If the container is cooled and the gas in th

Akimi4 [234]

Answer:

D. The volume of the container will decrease.

Explanation:

We apply here, the general gas law of ideal gases:

PV = nRT,

where, P is the pressure of the gas.

V is the volume of the container.

n is the no. of moles of the gas.

R is the general gas constant.

T is the temperature of the gas.

We are given that P is constant.

Also, n is constant as there is no added external gases.

T is decreased as the container is cooled.

So, the volume will change as the container is nonrigid.

V α T.

The volume is directly proportional to the temperature,

Thus, as the container is cooled, the T will decrease, and the volume of the container will decrease.

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4 years ago