WAEC Past Questions and Answers - Page 1043

5,211.

One mega byte is equal to

A.

8 bytes

B.

1 million bytes

C.

10 million bytes

D.

1 billion bytes

Correct answer is A

No explanation has been provided for this answer.

5,212.

A bond acknowledging a loan to a company under the company's seal, bearing a fixed rate of interest is known as

A.

Certificate

B.

Agreement

C.

Bank loan

D.

Debenture

Correct answer is D

No explanation has been provided for this answer.

5,213.

In which of the following series can be the formula S = \(\frac{a}{1 - r}\) where a is the first term and r is the common ratio, be used to find the sum of all the terms? 

A.

4 + 8 + 16 + 32 + ...

B.

\(\frac{1}{2}\) + 2 \(\frac{1}{2}\) + 12\(\frac{1}{2}\) + 62 \(\frac{1}{2}\) + ..

C.

\(\frac{4}{81}\) + \(\frac{2}{27}\) + \(\frac{1}{9}\) + \(\frac{1}{6}\) + ...

D.

128 + 64 + 32 + 16 + ...

Correct answer is D

No explanation has been provided for this answer.

5,214.

A stone was dropped from the top of a building 40m high. Find, correct to one decimal place, the time it took the stone to reach the ground. [Take g = 9.8ms\(^{-2}\)]

A.

2.9.seconds

B.

2.8 seconds

C.

2.6 seconds

D.

1.4 seconds

Correct answer is A

s = \(\frac{1}{2}gt^2\) 

40 = \(\frac{1}{2} \times 9.8 \times t^2\)

\(\frac{80}{9.8} = t^2\)

t = \(\sqrt{8.16326}\)

t  2.9 secs

5,215.

Given that F = 3i - 12j, R = 7i + 5j and N = pi + qj are forces acting on a body, if the body is in equilibrium. find the values of p and q.

A.

p=-10, q=7

B.

p=-10, q=-7

C.

p=10, q=- 7

D.

p-10, q=7

Correct answer is C

If the body is in equilibrium then 

F + R = N 

3i - 12j + 7i + 5j = pi + qj

10i - 7j = pi + qj

p = 10, q = -7