Correct Answer: D. 2.5N

Explanation

\(g_1 = \frac{Gm_1m_2}{r^2_1}\)

\(m_1m_2 = \frac{gr^2_1}{G}\)

\(g_2 = \frac{Ggr^2_1}{Gr^2_2} = \frac{10 \times 0.1^2}{0.2^2}\)

= 2.5N

Correct Answer: A) it records both cash and credit sales

Correct Answer: C. does not understand the girl's language

Correct Answer: B. 16cm

Explanation

To show that V\(_E\) = \(\sqrt{20R}\)

KE = Gravitational Potential Energy

\(\frac{1}{2}\)MV\(_E^2\) = \(\frac{GmM}{R}\)

V\(_E^2\) = \(\frac{2GM}{R}\)

but GM = gR\(^2\)

V\(_E^2\) = \(\frac{2gR^2}{R}\) = 2gR

V\(_E^2\) = \(\sqrt{2 \times 10 \times R}\)

= \(\sqrt{20R}\)

OR

P.E = K.E

mgR = \(\frac{1}{2}\)mv\(^2\)

v\(^2\) = 2gR

v = \(\sqrt{2gR}\)

= \(\sqrt{20R}\)

Correct Answer: C. The pollen grains have rough spiny surfaces

Correct Answer: C. sellers are willing to sell more at a higher price

Explanation

A supply curve will normally slope upwards (positive) because sellers like it when they're selling at higher prices than lower ones. So they're more willing to sell at higher prices than lower ones.

Correct Answer: A. 60cm²

Explanation

New are = (2 x 15) x (2 x x) = 60cm²

Correct Answer: B. judicial review

Correct Answer: D) a decrease in the resulting biomass

Explanation

This Biology question is asking which of the following is a direct consequence of transferring energy from one trophic level to another. The options are A) an increase in biomass, B) a decrease in the efficiency of energy conversion, C) an increase in the total numbers of resulting individuals, and D) a decrease in the resulting biomass (which is the correct answer). When energy is transferred from one trophic level to another, it is not possible for all of it to be absorbed by the next level. For example, when a herbivore eats a plant, it cannot absorb all of the energy in the plant. Some of it is lost as heat or used in metabolic processes, such as digestion. This means that less energy is available to the next level. As a result of this decrease in available energy, there is a decrease in the resulting biomass at each successive trophic level. This is because less energy is available to support the growth and reproduction of organisms at each level. Therefore, option D is the correct answer to this question. It is important to note that the efficiency of energy conversion does decrease as energy is transferred from one trophic level to another, but this is not a direct consequence of the transfer. Additionally, an increase in biomass or total numbers of individuals is not a direct consequence of transferring energy between trophic levels. Understanding the concept of trophic levels and energy transfer is important in ecology and understanding the interactions between organisms in an ecosystem.