Advertisements
Advertisements
Question
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a car going uphill.
Advertisements
Solution
- Kinetic energy to potential energy (because the vehicle is approaching a specific height).
- Chemical energy to Kinetic energy (because the car is in motion).
APPEARS IN
RELATED QUESTIONS
What are the various energy transformations that occur when you are riding a bicycle?
State the energy changes that occur in the following :
An electric generator (or dynamo).
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the unwinding of a watch spring.
State the energy changes in the following case while in use:
Washing machine
State the energy changes in the following case while in use:
A solar cell
State the energy changes in the following case while in use:
Bio-gas burner
Explain conservation of energy.
A boy is moving on a straight road against a frictional force of 5 N. After travelling a distance of 1.5 km he forgot the correct path at a roundabout (Fig. 11.1) of radius 100 m. However, he moves on the circular path for one and half-cycle and then he moves forward up to 2.0 km. Calculate the work done by him.
Can any object have momentum even if its mechanical energy is zero? Explain
If an electric iron of 1200 W is used for 30 minutes every day, find electric energy consumed in the month of April.
