WASSCE PHYSICS MAY/JUNE 2012 (SSCE WAEC MAY/JUNE 2012 PHYSICS)
The derived unit of pressure can be expressed as
B. kg m-1s-2
C. kg m-2s-2
D. kg m-1s2
The diagram above illustrates trapped air in a syringe placed in water that is gradually heated. It is observed that the piston rises as the temperature of the water rises. Which of the following statements explains this observation?