Correct Answer: B. positive

Explanation

Cross elasticity of demand measures the responsiveness of the quantity demanded of one good to a change in the price of another good. If two goods are substitutes, an increase in the price of one will lead to an increase in demand for the other, and vice versa. Therefore, the cross elasticity of demand for substitutes is positive.

Correct Answer: C) Assault

Explanation

Lobbying is a tactic where pressure groups try to influence lawmakers or government officials to make decisions that align with their interests. This can be done through meetings, letters, or other forms of communication.

Propaganda is a tactic where pressure groups try to influence public opinion by spreading information or ideas that support their cause. This can be done through advertising, social media, or other forms of communication.

Assault is not a tactic that pressure groups adopt in the pursuit of their objectives. Assault is a violent attack on someone, which is illegal and can result in criminal charges.

Boycott is a tactic where pressure groups try to influence businesses or individuals by refusing to buy or use their products or services. This can be an effective way to put pressure on businesses to change their policies or practices.

In summary, the correct answer to this question is Option C: Assault. Pressure groups do not adopt assault as a tactic to achieve their objectives.

Correct Answer: D. Qadiriyyah

Correct Answer: C. 66.7%

Correct Answer: C. expectation of future price increase

Correct Answer: D) Argon

Correct Answer: A. Muharram

Explanation

(a) Conclusion from Rutherford's experiment;

- The nucleus is massive

- Most of the atom is empty space

- The nucleus is positively charged

- Electrons revolve round the nucleus

- It explains the periodicity of elements in the periodic table

b )(i) E\(_2\) = E\(_2\) - E\(_o\)

= - 2.0 - (-12.0)

= 10.0 e V

= 10 x 1.6 x 1O\(^{-19}\)J

= 1.6 x 10\(^{-18}\)J

E = hf

Or

f = E/h

= 1.6 x 10\(^{18}\)

= 6.6 x10\(^{-34}\)

= 2.424 x 10\(^{15}\) Hz

(ii) c = fλ

λ= c/f

= 3 x 10\(^8\)

2.424 x 10\(^{15}\) Hz

(c) A: Natural radioactivity

B: Artificial radioactivity

Any correct difference

Correct Answer: D. metaphor

Correct Answer: B. \(\frac{3}{8}\)

Explanation

Let the probability of getting a head = p = \(\frac{1}{2}\) and that of tail = q = \(\frac{1}{2}\)

\((p + q)^{3} = p^{3} + 3p^{2}q + 3pq^{2} + q^{3}\)

In the equation above, \(p^{3}\) and \(q^{3}\) are the probabilities of 3 heads and 3 tails respectively

while, \(p^{2}q\) and \(pq^{2}\) are the probabilities of 2 heads and one tail and 2 tails and one head respectively.

Probability of exactly 2 heads = \(3p^{2}q = 3(\frac{1}{2})^{2}(\frac{1}{2})\)

= \(\frac{3}{8}\)