Q47 of 100 Page 209

Explain why, water comes out more slowly from an upstairs tap than from a similar tap downstairs.

As the depth of water increases the pressure also increases.

Why do mountaineers usually suffer from nose-bleeding at high altitudes ?

Describe one activity to show the existence of atmospheric pressure.

What is meant by gravitational force (or force of gravity)? Give its one example.

Calculate the pressure when a force of 200 N is exerted on an area of:

(a) 10m² (b) 5m²