Ratio of the body surface to the body size is less in

A body is in thermal equilibrium with surrounding. Absorptive power of the surface of the body is a = 0.5 . E is the radiant energy incident in unit time on the surface of the body. How much energy propagates from its surface in unit time?

A body floats (2)/(9) of its volume above the surface. What is the ratio of the body submerged volume to its exposed volume? Re-write it as a rational number.

The coefficient of absorption and reflection of the surface of a body are 0. 75 and 0.20 respectively. If 200 calorie of radiant heat is incident on the surface of the body, then the beat absorbed is

If the mass of body is M on the surface of the earth ,then its mass on the surface of the moon will be

The escape velocity of a body from the surface of the earth is equal to

The coefficients of static friction between contact surface of two bodies is 1. The contact surface of one body support the orther till the inclination is less than

Masses of the earth and the moon are in the ratio 3:2 and the radii of the earth and the moon are in the ratio of 6:1 . The ratio of the weight of the body on their surface will be