Which of the following is an example of work being done on an object?
A.
A wagon is used to carry vegetables from a garden.
OB.
A pulley is used to get water from a well.
C.
A hammer is used to remove a nail from a wall.
OD. all of these

d. All of these

Explanation:

work is said to be done when a force is applied to an object through a certain distance. the SI unit of workdone is joules or newton per meter

mathematically

workdone = force x distance.

from the answers,  work is being done because there is force applied in a certain distance.

which three statements are true about all alloys?

measuring things 1 litre of water