Advertisements
Advertisements
Question
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Advertisements
Solution
A steam engine converts heat energy into mechanical energy.
APPEARS IN
RELATED QUESTIONS
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 _______________.
State whether the object possess kinetic energy, potential energy, or both :
A ceiling fan in the off position ______________
What is the difference between potential energy and kinetic energy?
Name the device which converts electrical energy into mechanical energy.
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
Write the energy transformations which take place in an electric bulb (or electric lamp).
What is the meaning of the symbol kWh? What quantity does it represent?
Name the energy transfers which occur when an electric ball rings.
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
