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प्रश्न
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
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उत्तर
A steam engine converts heat energy into mechanical energy.
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संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
State whether the object possess kinetic energy, potential energy, or both :
A flying aeroplane _______________.
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Electrical energy into light energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
What kind of energy transformations take place at a coal-based thermal power station?
Name the energy transfers which occur when someone speaks into a microphone.
Which of the following energy change involves frictional force?
How much energy does a 100 W electric bulb transfer in 1 minute?
