Advertisements
Advertisements
प्रश्न
State two advantage of producing hydroelectricity.
उत्तर
Advantages of producing the hydroelectricity:
1. It does not produce any environmental pollution.
2. It is a renewable source of energy.
APPEARS IN
संबंधित प्रश्न
Define 1 J of work.
When does a force perform work?
State two factors on which the work done on a body depends.
Express joule in terms of erg.
Write the formula for work done on a body when the body moves at an angle to the direction of force. Give the meaning of each symbol used.
How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
The work done on an object does not depend on the :
How many watts equal one horse power?
Give two examples of couple action in our daily life.
What is the SI unit of work?
Define Translational motion.
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
State the amount of work done by an object when it moves in a circular path for one complete rotation. Give a reason to justify your answer.
A bucketful of water is to be drawn from a well ______ will be done when a ______ is applied to do this because there will be a ______ of water.
(displacement, work, force)
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
