Gravitation — Physics STD 11 Science — Question

Water flows faster than honey. Why?

At the same temperature and pressure, the densities of two diatomic gases are d, and d. What is the ratio of the speeds of sound in these gases?

What happens to coefficient of friction, when weight of body is doubled?

Faraday constant:

1. Depends on the amount of the electrolyte.
2. Depends on the current in the electrolyte.
3. Is a universal constant.
4. Depends on the amount of charge passed through the electrolyte.

Draw the variation of potential energy stored in a spring as a function of extension.

What provides the centripetal force to a car taking a turn on a level road?

If the angular momentum of a body is found to be zero about a point, is it necessary that it will also be zero about a different point?

A source emits 45 joules of energy in 15s. What is the radiant flux of the source?

Read each statement below carefully and state, with reasons, if it is true or false:
The acceleration vector of a particle in uniform circular motion averaged over one cycle is a null vector.