Advertisements
Advertisements
प्रश्न
What is the difference between renewable and non-renewable resources?
Advertisements
उत्तर
| Renewable Sources | Non-renewable Sources |
| 1. The resources that can be renewed by reproduction are called renewable resources. | 1. The resources that are present in fixed quantities are called non-renewable. |
| 2. Renewable resources are inexhaustible. | 2. Non-renewable resources are exhaustible. |
| 3. Renewable resources are not affected by human activities. | 3. Non-renewable resources are affected by human activities. |
| 4. They are the non-conventional sources. | 4. They are the conventional sources. |
| 5. Example: Wind energy, solar energy, and hydro energy. | 5. Example: Coal, petroleum, and natural gas. |
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?
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
How is work related to energy?
State the energy transformation on the following:
Electricity is obtained from solar energy.
Name the physical quantity whose SI unit is Nm.
A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
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’.
An engine is pulling a train.
