Advertisements
Advertisements
प्रश्न
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
Advertisements
उत्तर
When a cyclist doubles his speed. His kinetic energy increases four times.
K.E. = 1 / 2 Mv2
When v = doubles the K.E. quadriples
APPEARS IN
संबंधित प्रश्न
State two disadvantages of geothermal energy.
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
A body of mass m falls down through a height h. Obtain an expression for the work done by the force of gravity.
Name the energy changes for the following:
bicycle brakes
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
The major problem in harnessing nuclear energy is how to
