हिंदी

State Larger Units of Power. - Physics

Advertisements
Advertisements

प्रश्न

State larger units of power.

संख्यात्मक

उत्तर

The larger units of power are:
1 Kilowatt = 1000 watt 103 W
1 Megawatt = 1000,000 W = 106 W.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Force, Work, Power and Energy - Short Answers

APPEARS IN

आईसीएसई Physics [English] Class 10
अध्याय 1 Force, Work, Power and Energy
Short Answers | Q 60

संबंधित प्रश्न

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?


A body, when acted upon by a force of 10 kgf, moves to a distance 0.5 m in the direction of force. Find the work done by the force. Take 1 kgf = 10 N.


When is work said to be done by a force?


A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:

The loss in potential energy of the body, 


What do you mean by degradation of energy?


A max X goes to the top of a building by a vertical spiral staircase. Another man Y of the same mass goes to the top of the same building by a slanting ladder. Which of the two does more work against gravity and why?


What are the quantities on which the work done depends?

What is the work done on the earth by the gravitational force of the sun during its motion around the sun?

What do you mean by a kilo joule?


Distinguish between work and power.


A boy of mass m climbs up a staircase of vertical height h.

  1. What is the work done by the boy against the force of gravity?
  2. What would have been the work done if he uses a lift in climbing the same vertical height?

The K.E. of a body is 5 J. What will be its K.E. when its speed is doubled?

Define energy and state the unit of energy and the law of conservation of energy.


A bullet of mass 25 g has a velocity of 600 ms-1. What is the kinetic energy of the bullet? If it penetrates 50 cm into a target, find the resistive force offered by the target.

In the following case write yes, if the work is being done and no if no work is being done.

A coolie standing with a heavy load on his head


What is the difference between renewable and non-renewable resources?


A force can cause an object to change its ______.


Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

Food grains are getting dried in the sun.


A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments; one in which the charged particle is also a proton and in another, a positron. In the same time t, the work done on the two moving charged particles is ______.


A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×