Physics WAEC

A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m3, calculate the pressure it exerts on the surface.

A. 200 N/m²
A. 300 N/m²
B. 100 N/m²
C. 400 N/m²

Correct Answer: Option A

A. 200 N/m²

SEE ALSO A man standing 300m away from the wall sounds a whistle. The echo from the wall reaches him 1.8sec. later. Calculate the velocity of sound in air?
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