Advertisements
Advertisements
Question
State larger units of power.
Advertisements
Solution
The larger units of power are:
1 Kilowatt = 1000 watt 103 W
1 Megawatt = 1000,000 W = 106 W.
RELATED QUESTIONS
A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force. Calculate the work done by the force.
A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)
State the conditions of equilibrium for a rigid body.
Name the force acting away from the centre of circular path.
(a) Define power and name its unit.
(b) A girl weighting 50 kg climbs up 60 steps each of 20 cm height in 5 minutes. Calculate the power developed.
How fast should a boy weighting 30 kg run so that his kinetic energy is 375 joule?
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
What is the difference between renewable and non-renewable resources?
A girl of mass 40 kg runs a height of 80 stairs, each 25 cm high with a load of 20 kg on her head in 25 sec. If g is 10 m/s2, find:
(i) Gravitational force acting on the girl.
(ii) Work done by her.
(iii) Useful work done by her.
(iv) Her power in watt.
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
