WAEC Physics Past Questions & Answers - Page 201

1,001.
1,002.

The apparent weight of a body fully immersed in water is 32N and its weight in air is 96N. Calculate the volume of the body. [Density of water = 1000kgm-3, g = 10ms-2]

A.

8.9 x 10-3m3

B.

6.4 x 10-3m3

C.

3.2 x 10-3m3

D.

3.0 x 10-3m3

Correct answer is B

Upthrust = 96 - 32 = 64N

mass(m) = \(\frac{64}{10} = 6.4 kg\)

volume = \(\frac{mass}{Density} = \frac{6.4}{1000}\)

= 6.4 x 10-3m3

1,003.

Which of the following statements about pressure is not correct? pressure

A.

increases with an increase in surface area

B.

decreases with an increase in surface area

C.

increases with a decrease in surface area

D.

increases with an increase in the applied force

Correct answer is A

No explanation has been provided for this answer.

1,005.