WAEC Past Questions and Answers - Page 3596

17,976.

The cell body in the diagram labelled 

A.

I

B.

II

C.

III

D.

IV

E.

V

Correct answer is A

No explanation has been provided for this answer.

17,977.

Which of the following explains the concave meniscus of water in a clean glass tube? the

A.

adhension between water and glass molecules is greater than the sdhension between water molecules

B.

cohension between water molecules is greater then the adhension between glass and water molecule

C.

molecules of water near the glass move faster than the molecules at the centre of the tube

D.

molecules of water at the water-air boundary are often attracted to the centre of the tube

E.

weight of the water pulls the centre part of the surface down

Correct answer is A

No explanation has been provided for this answer.

17,978.

Which of the following bones forms a joint at the point labelled II in the diagram?

A.

Humerus

B.

Sternum

C.

Radius

D.

Femur

Correct answer is B

No explanation has been provided for this answer.

17,979.

Use the following data to determine the length L of a wire when a force of 30N is applied, assuming Hooke's law is obeyed
\(\begin{array}{c|c}\text{Force applied/N} & 0 & 5 & 10 & 30\\ \hline \text{length of wire/mm} & 500.0 & 500.0 & 501.0 & L \end{array}\)

A.

3.0mm

B.

3.5mm

C.

503.00mm

D.

503.5mm

E.

506.0mm

Correct answer is C

F \(\alpha\) e

F = ke

K = \(\frac{F}{e} = \frac{5}{0.5} = 10\)

when F = 30, e = \(\frac{F}{K} = \frac{30}{10} = 3\)

L = 500 + 3 = 503.00

17,980.

The part labelled l in the diagram is for the attachment of 

A.

ribs

B.

biceps

C.

shoulder muscles

D.

the vertebral column

Correct answer is C

No explanation has been provided for this answer.