Ekapluto is an unknown planet that has two spherical moons in circular orbits. The table summarizes the hypothetical data about the moons. Both moons have low axial spin rates. (G = 6.67 × 10-11 N ? m2/kg2)

Mass Radius Orbital radius Orbital period
Moon A 4.0 × 1020 kg 2.0 × 108 m 4.0 × 106 s
Moon B 1.5 × 1020 kg 2.0 × 105 m 3.0 × 108 m

The acceleration due to gravity at the surface of Moon B is
A) 0.10 m/s2.
B) 0.15 m/s2.
C) 0.20 m/s2.
D) 0.25 m/s2.
E) 0.30 m/s2.


Answer: D

Physics & Space Science

You might also like to view...

Power: The heating element of a toaster is a 5.4-m length of nichrome wire of diameter 0.48 mm. The resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ? ? m. The toaster is designed to operate at a voltage of 120 V. How much power does it draw in normal operation?

A. 370 W B. 360 W C. 380 W D. 400 W E. 410 W

Physics & Space Science

Earth's actual diameter is about 12,800 kilometers. What is Earth's diameter in a 1-to-10 billion scale model solar system? Show your work clearly.

What will be an ideal response?

Physics & Space Science

Olympus Mons is

A) a huge shield volcano on Mars. B) a huge stratovolcano on Venus. C) a large lava plain on the Moon. D) a great canyon on Mars.

Physics & Space Science

A hot pizza contains

a. heat. b. internal energy. c. temperature. d. work. e. none of the above.

Physics & Space Science