Explanation

(a) This is the force of attraction of the Earth on a mass

It is a vector quantity and is measured in ms\(^{-2}\)

It pulls the acceleration when a body is in vacuum or without resistance. OR/F = g

(all symbols explained) where F = force of gravity, M = mass of the object

(b) — (Shape of the earth). The earth is not a perfect sphere (1) or the shape of the earth is elliptical - Rotation of the Earth about its polar axis.

(c)(i) Let H = height of tower and h = vertical difference covered by the stone from the point of projection.

(i) V\(_2\) = (Usin\(\theta\))\(^2\) - 2gh

\(\theta\) = 100 x 100 x (\(\frac{1}{2}\))\(^2\) - 20h

h = \(\frac{2500}{20}\)

= 125m

height above the ground

(i) S = H + 125 S = 100 + 125 S = 225m

(ii) V = U sin \(\theta\) – gt

0 = 100 sin 30° – 10t

t = \(\frac{100 \times 0.5}{10}\)

t = 5s

(iii) Using S = ut + 1/2 gt\(^2\)

225 = 0 + 1/2 x 10t\(^2\)

t = \(\sqrt{45}\) = 6.71

Time of flight, T= 5 + 6.

T = 11.71s

(iv) Range R = UTcos\(\theta\)

Or S = ut – 1/2 gt\(^2\)

g = 0

=100 x 0.8660 x 11.71

= 1014.08 (C14)

Range \(\frac{U^2 sin20}{ g}\)

= 1013.22m

Correct Answer: C. Lord Montague

Correct Answer: C. Rich man's second request in hell

Correct Answer: A. Demetrious and Puck

Explanation

Self-explanatory

Correct Answer: D. speaker is more experienced

Correct Answer: D. O

Explanation

work = mgh(no motion)

Correct Answer: A. Consumer's culture

Explanation

The factor that is not a price determinant among the given options is the consumer's culture. While the cost of production, competitor's prices, and the level of demand are all factors that can influence pricing decisions, the consumer's culture is not typically considered a direct determinant of price. Consumer culture refers to the beliefs, values, attitudes, and behaviors of a particular group of consumers, which can influence their purchasing decisions and preferences. However, it is not directly tied to the determination of prices in a market.

Correct Answer: B. Foes

Correct Answer: D. population

Correct Answer: B. has been repaired

Explanation

The correct option is B. has been repaired.

Here's why:

1. Passive Voice: Cars don't repair themselves; they are repaired by someone. Therefore, the passive voice is required (e.g., was repaired, has been repaired, had been repaired). This eliminates option D (has repaired) immediately, as it's active voice, implying the car did the repairing.

2. Time Frame: The phrase several times this year refers to actions that started in the past (within the current year) and continue or have their effect up to the present moment. This is a key indicator for the present perfect tense.

* A. was repaired: Simple past passive. This would be used for a completed action at a specific time in the past, without a strong connection to the present (e.g., The car was repaired last month). While grammatically possible in some contexts, this year points more strongly to the present perfect.

* B. has been repaired: Present perfect passive. This perfectly fits the context. It means that the action of repairing happened multiple times within the current year, and these repairs are relevant up to now.

* C. had been repaired: Past perfect passive. This describes an action completed before another past action (e.g., The car had been repaired before I bought it). It doesn't fit with this year referring to the current year.

Therefore, The old car has been repaired several times this year is the most appropriate and grammatically correct choice.