Correct Answer: D. cattle up and down mountains for pasture

Explanation

(a) Capacitance of a capacitor is the ratio of the charge Q on either plate of the capacitor to the p.d in volts between the plates. Mathematically,

\(Capacitance = \frac{Q}{V}\)

Q - Charge ; V - voltage.

(b) Three factors on which the capacitance of a parallel - plate capacitor depends on are: (1) Common area of the plates (2) Dielectric between the plates (3) Separation between the plates.

(c) Work done W = QV

Average work done = \(\frac{1}{2} QV\)

But \(V = \frac{Q}{C}\)

\(\therefore W = \frac{Q}{2} \times \frac{Q}{C} = \frac{Q^{2}}{2C}\)

\(\therefore \text{Energy stored W = } \frac{Q^{2}}{2C}\)

(d)

\(\frac{1}{C} = \frac{1}{C_{1}} + \frac{1}{C_{2}}\)

= \(\frac{1}{6} + \frac{1}{4} = \frac{10}{24}\)

\(C = 2.4 \mu F\)

\(Q = \frac{24}{10} \times 100 \times 10^{-6} = 240 \mu C\)

= \(240 \times 10^{-6} C\)

(ii) p.d across 4\(\mu F, V_{4} = \frac{Q}{C}\)

\(V_{4} = \frac{240 \times 10^{-6}}{4 \times 10^{-6}} = 60V\)

p.d across 6\(\mu F, V_{6} = \frac{Q}{C}\)

= \(\frac{240 \times 10^{-6}}{6 \times 10^{-6}} = 40V\)

(iii) Energy stored = \(\frac{Q^{2}}{2C}\)

= \(\frac{(240 \times 10^{-6})^{2}}{2 \times 2.4 \times 10^{-6}}\)

= \(1.2 \times 10^{-2} J\)

Correct Answer: B. occupation

Explanation

Industrial, commercial, and service are types of occupations. An occupation is a job or profession. Industrial occupations involve the production of goods, commercial occupations involve trade, and service occupations involve providing services to others.

Correct Answer: D. nominal price

Explanation

Nominal value of a security, often referred to as face or par value, is its redemption price and is normally stated on the front of that security.

Correct Answer: C. our passions

Correct Answer: C. They may prioritize their own interests over the public interest

Explanation

Pressure groups may prioritize their own interests over the public interest. This is because pressure groups are formed by individuals or organizations with specific interests or objectives. They aim to influence public policy and decision-making in favor of their interests, which may not always align with the broader public interest.

Correct Answer: A. trade

Correct Answer: D. Presence of a segmented body

Explanation

Arthropods are characterized by the presence of a segmented body. This is a key characteristic of the phylum Arthropoda, which includes insects, spiders, and crustaceans. The other options are incorrect. Arthropods do not exhibit radial symmetry, they have an open circulatory system, and their exoskeleton is made of chitin, not bones.

Correct Answer: C. 1959

Explanation

Nigeria became a full federal state in the year 1959. The colonialist left Nigeria for the sake of Independence in 1959

Correct Answer: C. N8 000