Physics [1 Mark Question Answer]

State the energy changes in the following case while in use:
washing machine

State the energy changes in the following case while in use:
microphone

State the energy changes in the following case while in use:
a steam engine

State the energy changes in the following case while in use:
loudspeaker

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
explosion of crackers.

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
burning of a match stick

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
respiration

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
Charging of a battery.

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
photosynthesis in green leaves.

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
a car going uphill

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
a loaded truck when started and set in motion.

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
the unwinding of a watch spring

Name the form of mechanical energy, which is put to use.

Name the form of energy in which potential energy can change.

State the work energy theorem.

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.

A satellite revolves around the earth in a circular orbit. What is the work done by the force of gravity? Give reason.

A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force

Is it possible that no transfer of energy may take place even when a force is applied to a body?

A force F acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of force.
Write the expression for the work done by the force.

Name the quality which is measured in eV

Name the quality which is measured in Wh.

Name the quality which is measured in kW.

Name the quality which is measured in kWh.

Differentiate between watt and watt hour.

How is horse power related to the S. I. unit of power?

Name the physical quantity measured in terms of horse power.

State and define the S.I. unit of power.

Define the term power. State its S.I. unit.

Define a kilowatt hour. How is it related to joule?

Name the physical quantity which is measured in calorie. How is it related to the S.I. unit of the quality?

How is the work done by a force measured when
force is in direction of displacement

Complete the following sentence:
1 J = Calorie

What physical quantity does the electron volt (eV) measure? How is it related to the S.I. unit of that quality?

Define the term energy and state its S.I. unit.

When is work said to be done by a force?

The work done by a fielder when he takes a catch in a cricket match, is negative Explain.

Define work.