Frictional force between two bodies

Statement A: Lyophilic colloids are more stable than lyophobic colloids.Statement B: In lyophobic system, the dispersed particles are more solvated than in lyophilic system.

Two bodies having the same mass 2 kg each have different surface areas 50m2 and 100m2 in contact with a horizontal plane. &nbsp;If the coefficient of friction is 0.2, the forces of friction that come into play when they are in motion will be in the ratio &nbsp;

A stationary ball weighing&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0</mn><mo>.</mo><mn>25</mn><mo>&nbsp;</mo><mi>kg</mi></math>&nbsp;acquires a speed of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>10</mn><mo>&nbsp;</mo><mi mathvariant="normal">m</mi><mo>/</mo><mi mathvariant="normal">s</mi></math>&nbsp;when hit by a cricket bat. What would be the impulse imparted to the ball?

Intensity of the scattered light depends upon the difference of which of the following property of the dispersed phase and the dispersion medium?

Frictional force between two bodies

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