WAEC Past Questions and Answers - Page 3452

17,256.

A rectangular block of dimensions 2.0m x 1.0m x 0.5m weighs 200N. calculate the maximum pressure exerted by the block on a horizontal floor.

A.

100Nm-2

B.

200Nm-2

C.

300Nm-2

D.

400Nm-2

Correct answer is A

P = \(\frac{wt}{A} = \frac{200}{2 \times 1} = 100Nm^{-2}\)

17,258.

Which of the following is/are in random motion?

i. Pollen grains in water
ii. The molecules of hydrogen gas
ii. Fine chalk particles floating in air

A.

i and ii only

B.

i and iii only

C.

ii and iii only

D.

i, ii and iii

Correct answer is D

No explanation has been provided for this answer.

17,259.

Which of the following statements about Archimedes' principle is correct? The upthrust on a body is a measure of the

A.

mass of fluid displaced

B.

weight of the body

C.

volume of the body

D.

weight of the fluid displaced

Correct answer is D

No explanation has been provided for this answer.

17,260.

Which of the following sets of quantities is fundamental?

A.

length, mass and time

B.

speed, length and time

C.

speed, mass and distance

D.

distance, speed and time

Correct answer is A

No explanation has been provided for this answer.