Briefly explain Mars's moons
What will be an ideal response?
Unlike Mercury or Venus, Mars has moons. Small and irregular in shape, Phobos (28 × 23 × 20 km in diameter) and Deimos (16 × 12 × 10 km) are almost certainly captured asteroids. These moons are so small they cannot pull themselves into spherical shape. Phobos and Deimos are not just small; they are tiny. An athletic astronaut who could jump 2 m (6 ft) high on Earth could jump almost 3 km (2 mi) on Phobos. These moons are so small that any interior heat would have leaked away very quickly, and there is no evidence of any internally driven geologic activity on either object.
You might also like to view...
Molecular Speeds: The molecular weight of nitrogen, N2, is 28 g/mol. What is the rms speed of nitrogen molecules in a cooler at 8.0°C? The Boltzmann constant is 1.38 × 10-23 J/K and NA = 6.022 × 1023 molecules/mol.
A. 450 m/s B. 500 m/s C. 550 m/s D. 600 m/s E. 650 m/s
There are _______ nanometers in one meter
a. 1 × 10^3 b. 1 × 10^?3 c. 1 × 10^9 d. 1 × 10^?9 e. 400
A projectile is launched with an initial velocity of 80 m/s at 30° above the horizontal. Neglecting air resistance, what is horizontal component of the projectile's acceleration?
A) 40 m/s2 B) 0 m/s2 C) 69 m/s2 D) 9.8 m/s2 E) 80 m/s2
A river 100 m wide flows due south. A boat that goes 1 m/s relative to the water is pointed due east as it crosses from the west bank. The boat crosses in
A) 50 s. B) 100 s. C) 141 s. D) 200 s.