Mithra Is an Unknown Planet That Has Two Moons, a |

question 73

Multiple Choice

$$\begin{array} { | l | c | c | c | c | } \hline & \text { Mass } & \text { Radius } & \text { Orbital radius } & \text { Orbital period } \\\hline \text { Moon A } & 4.0 \times 10 ^ { 20 } \mathrm {~kg} & \text { unknown } & 2.0 \times 10 ^ { 8 } \mathrm {~m} & 4.0 \times 10 ^ { 6 } \mathrm {~s} \\\hline \text { Moon B } & 1.5 \times 10 ^ { 20 } \mathrm {~kg} & 2.0 \times 10 ^ { 5 } \mathrm {~m} & 3.0 \times 10 ^ { 8 } \mathrm {~m} & \text { unknown } \\\hline\end{array}$$ Mithra is an unknown planet that has two moons, A and B, in circular orbits around it. The table summarizes the hypothetical data about these moons. What is the mass of Mithra? (G = 6.67 × 10^-11 N ? m²/kg²)

• A)1 × 10²² kg
• B)3 × 10²² kg
• C)1 × 10²³ kg
• D)3 × 10²³ kg
• E)1 × 10²⁴ kg

---

Definitions:

Amphetamines

A class of stimulant drugs that increase alertness, attention, and energy, often used medically and recreationally.

Hypothalamic-Pituitary-Adrenal Axis

A major neuroendocrine system that controls reactions to stress and regulates many body processes, including digestion, immune system responses, and energy storage and expenditure.

Dysregulated HPA Axis

The dysfunction of the Hypothalamic-Pituitary-Adrenal axis, a central part of the stress response system, potentially leading to various health issues.

Personality Disorder

A type of mental disorder characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating markedly from those accepted by the individual's culture.