Explain the origin of friction.

Had Darwin been aware of Mendel's work would be been able to explain the origin of variations. Discuss.

Explain the origin of term magnetic quantum number ?

What is meant by colloid and colloidal state? How does the theory of selective adsorption explain the origin of charge on colloidal particles ?

The theory which explains the origin of life and is based upon experiments

Assertion :- Big-Bang theory talks of a singular huge explosion unimaginable in physical terms to explain the origin of universe. Reason :- Due to big-bang origin of life took place.

Miller created similar conditions in a laboratory scale for explaining the origin of life . The combination ratio of gases CH_4, H_2 and NH_3 is

Which theory attempts to explain to us the origin of universe?

The ______________ theory attempts to explain to us the origin of the universe. (a) Universal theory (b) Cosmozoic theory (c) Big Bang theory (d) None of these

If the normal force is doubled and limiting frictional force is maintained at the same value, the coefficient of friction

(i) Explain why friction is necessary to make the disc to roll in the direction indicated. (ii) Give the direction of frictional force at B , and the sense of frictional torque, before perfect rolling begins. (iii) What is the force of friction after perfect rolling begins?