Advertisements
Advertisements
प्रश्न
What kind of energy is possessed by the following?
A running car ____________
उत्तर
A running car possesses kinetic energy due to its speed.
APPEARS IN
संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
State whether the object possess kinetic energy, potential energy, or both :
A flying aeroplane _______________.
Fill in the blank with suitable word :
The sum of the potential and kinetic energies of a body is called __________ energy.
How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
Explain the transformation of energy in the following cases :
(i) A ball thrown upwards.
(ii) A stone dropped from the roof of a building.
What is the meaning of the symbol kWh? What quantity does it represent?
How much energy does a 100 W electric bulb transfer in 1 minute?
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 m s–2)
A girl with having a mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4 m s–1 by applying a force. The trolley comes to rest after traversing a distance of 16 m. (a) How much work is done on the trolley? (b) How much work is done by the girl?
