Find the energy possessed by an object of mass 10 kg when it is at a height of 6 m above the ground.Given, g = 9.8 m/s2
858 J
688 J
588 J
600 J
The energy possessed by a body due to its motion is called ________________.
Static energy
Kinetic energy.
Potential energy
None of these
What does the natural gas contain primarily ?
Propane.
Methane.
Butane.
Ethane.
Fuel coal is called _____________.
Fossil fuel
Renewable fuel
Natural gas
Catalytic fuel
What is the velocity of body of mass 100g having a K.E of 20 J ?
2ms-1
20m/s
40ms-1
What is the work done by a man in carrying a stone of mass 25kg in his head when he travels a distance of 15m in the vertical direction?
3600J
3675J
375J
3075J
An engine of 9.8 kw power is to pump water from a well of 90m depth. Calculate the quantity of water it can pump out in one hour?
40,000g.
4000kg.
4000g.
40,000kg.
An object of mass 1kg has a P.E of 1J relative to the ground when it is at a height of.
0.102m.
1m.
9.8m.
32m.
The chemical reaction which takes place in Sun and stars _____________.
Nuclear Fission
Mutation
Radioactive reaction
Nuclear fusion
The meaning of the Greek word "Energia" is
Power.
Work.
Energy.
Transformation.
