Correct Answer: A. queuing culture and environmental sanitation

Correct Answer: C. Piggy

Correct Answer: B. Meander

Explanation

An ox-bow lake is an U shaped body of water that forms when a wide meander from mainstream of a river is cut off creating a free standing body of water. there must be a meander before an ox-bow lake is formed. A meander in general is a bend in water course of a river which end up creating a curve

Correct Answer: A. AI(NO₃)₃

Explanation

(a) \(p(Kunle) = \frac{1}{3} ; p(\text{not Kunle}) = \frac{2}{3}\)

\(p(Tayo) = \frac{1}{5} ; p(\text{not Tayo}) = \frac{4}{5}\)

\(p(\text{only one solve the question}) = p(\text{Kunle and not Tayo}) + p(\text{Tayo and not Kunle})\)

= \((\frac{1}{3} \times \frac{4}{5}) + (\frac{1}{5} \times \frac{2}{3})\)

= \(\frac{4}{15} + \frac{2}{15}\)

= \(\frac{6}{15} = \frac{2}{5}\)

(b) 10 persons to choose 8

Number of ways = \(^{10}C_{8}\)

= \(\frac{10!}{(10 - 8)! 8!}\)

= \(\frac{10 \times 9}{2}\)

= 45 ways.

Correct Answer: D. generous

Explanation

(a)i) Explanation of resonance frequency as applied to RLC series circuit

- It is the frequency of oscillation of an RLC series circuit when the capacitive reactance is equal to the inductive reactance. The impedance is equal to the resistance /the impedance is minimum.

(ii) A sketched graph

(iii) \(\alpha\) Relationship between current and voltage when f = f\(_o\);

Current is in phase with the supply voltage (\(\beta\))

- Relationship when current and voltage when f = f\(_o\);

Current lags the Supply voltage (\(\gamma\))

- Relationship between current and voltage when f > f\(_o\);

Current leads the supply voltage.

(b) (i) Definition of mutual inductance:

The ratio of the induced emf in one coil/circuit to the time rate of change of current in the other coil. OR The production of e.m.f in a circuit as a result of the change in the magnetic flux/magnetic circuit in an adjacent circuit linked to it

.

(ii) Calculation of angular speed of the coil of an electric generator: E = \(\omega\)BAN

480 = \(\omega\) x 0.25 x \(\pi\) x (\(\frac{8.0 \times 10^{-2}}{2}\)) x 500 = \(\omega\) = 763.8 rad/s

(c)(i) Explanation of eddy current:

The current is induced and flows within a metal block when there is a change in magnetic flux linking the block.

OR

Loops of electric current induced within a conductor by the changing magnetic flux/field in the conductor.

OR

The localised electric current/loops of electric current

(ii) Practical Uses of eddy current:

- induction furnaces

- induction coils

- speedometers

- induction meters

Correct Answer: B. imagery

Explanation

The dominant poetic device in the excerpt is imagery. Imagery is a literary device that uses descriptive language to create mental images and stimulate the senses. In this excerpt, the poet uses imagery to describe the scene of the bat flying and dipping to the water.

Correct Answer: B. he was stoned for telling lie

Correct Answer: C. God spoke from heaven confirming the divine sonship of Jesus