Welcome to cbsenotes.com! To post messages or access any member only section, you will need an account. Create your free account now.
Already a member ? Click here to login
CBSE Notes 2011-2012 » IX-Science-Term2

Work and Energy

60 W means that the device will use 60 joule of energy in hour.

Multiple choice question

60 W means that the device will use 60 joule of
energy in hour.

A. We do not work as we push a wall. B. A raised hammer can deliver more kinetic energy. C. Solar en...

Multiple choice question

A. We do not work as we push a wall.
B. A raised hammer can deliver more kinetic energy.
C. Solar energy is a form of hydal energy

A. Streched bow has potential energy. B. Catapult has kinetic energy.

Multiple choice question

A. Streched bow has potential energy.
B. Catapult has kinetic energy.

When a body falls freely towards the earth, then its total energy

Multiple choice question

When a body falls freely towards the earth, then
its total energy

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In t...

Multiple choice question

A car is accelerated on a levelled road and attains a
velocity 4 times of its initial velocity. In this process
the potential energy of the car

In case of negative work the angle between the force and displacement is

Multiple choice question

In case of negative work the angle between the force
and displacement is

Syndicate content