Pressure questions | form one Physics

1. Define pressure and state its SI unit

2. A rectangular block weighing 350 N has dimensions 30 cm x 20 cm x 10 cm. Calculate the minimum pressure of the block.

Pressure in a liquid contained in a vessel depends on the:
A. density of the container
B. depth of the container
C. mass of the liquid
D. surface area

a) What is atmospheric pressure?
b) If the pressure is 650mm of mercury, express this value in SI units.

You feel more pain if someone with pointed high heel shoes steps on your foot than when the same person with flat shoes steps on you because:
A. the flat shoes are not as heavy as the pointed ones
B. the leather of the shoes has big weight
C. pressure exerted is greater with flat shoes
D. pressure exerted is greater with pointed high heel shoes

The pressure exerted on an area of 10 m2 by a force of 2N is:____

Calculate the pressure exerted on an area of 10 m2 by a force of 2 N.
 

When a gas is compressed at constant temperature, the gas molecules
A move faster than air outside and the pressure is increased
B move with uniform speed and the pressure is unchanged
C gain more kinetic energy and the pressure is decreased
D increase slightly in size and its pressure remains constant
E make more impacts per second on the walls of the container.

Manometer is used for measuring
A. temperature.
B. wind speed.
C. gas pressure.
D. density of liquid.

A force exerted by a pressure of P N/m2 and acting over an area of A m² is
A. P Newton.
B. A Newton.
C. F Newton.
D. PA Newton.

Write equation for
(i) Charle’s law
(ii) Boyle’s law