Planet a Has Twice the Mass of Planet B

question 113

Multiple Choice

Planet A has twice the mass of Planet B.From this information,what can we conclude about the free-fall acceleration at the surface of Planet A compared to that at the surface of Planet B?

• A)The free-fall acceleration on Planet A must be twice as great as the free-fall acceleration on Planet B.
• B)The free-fall acceleration on Planet A must be four times as great as the free-fall acceleration on Planet B.
• C)The free-fall acceleration on Planet A is the same as the free-fall acceleration on Planet B.
• D)The free-fall acceleration on Planet A is greater than the free-fall acceleration on Planet B, but we cannot say how much greater.
• E)We cannot conclude anything about the free-fall acceleration on Planet A without knowing the radii of the two planets.

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Definitions:

Progesterone

Progesterone is a hormone produced in the ovaries, placenta, and adrenal glands that plays a key role in the menstrual cycle and maintaining pregnancy.

Estrogen

A group of steroid hormones that play a key role in the development and regulation of the female reproductive system and secondary sex characteristics.

Estrus

A phase in the female reproductive cycle of mammals during which they are sexually receptive and fertile.

Mate Selection

The process by which individuals choose their partners based on certain traits, which can be influenced by biological, psychological, and socio-cultural factors.