Advertisements
Advertisements
प्रश्न
Fill in the boxe to show the corresponding energy transformation.
रिक्त स्थान भरें
Advertisements
उत्तर
Electrical energy ⇌ Heat energy
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
State two conditions when no work is done by a force.
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
State the law of conservation of energy.
Explain by an example that a body may possess energy even when it is not in motion.
How many watts equal one horse power?
What should be the angle between the directions of the displacement and the applied force so that the work done is zero?
What is the relation between 1 H.P. and 1 kW?
A block of iron of mass 400 kg is used as a pile driver. If it is raised to a height of 20 meters, calculate the potential energy possessed by the iron block. (Assume g= 10 ms-2).
If 60% of the potential energy available in a waterfall is converted into heat energy, find the height of the waterfall, when the temperature difference between the top and the bottom of the fall is 0.210C (sp. Heat cap. Of water = 4200J/kgK).
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.
