Density: The mass of Mars, 6.40 × 1023 kg, is about one-tenth that of Earth, and its radius, 3395 km, is about half that of Earth. What is the mean density (mass divided by volume) of Mars in kilograms per cubic meter?

A. 9.76 × 102 kg/m3
B. 1.95 × 103 kg/m3
C. 3.90 × 103 kg/m3
D. 7.81 × 103 kg/m3


Answer: C

Physics & Space Science

You might also like to view...

A glider on an air track is connected by a spring to the end of the air track. If it is pulled 3.5 cm in the ?x direction away from its equilibrium point and then released from rest at t = 0, what is the initial phase ?

A. 0
B.
C.
D.
E.
F. Some other result (specify)

Physics & Space Science

Higher temperatures make rocks weaker

Indicate whether the statement is true or false

Physics & Space Science

The law of conservation of momentum applies to a collision between two bodies since

A. they exert equal and opposite forces on each other. B. they exert forces on each other respectively proportional to their masses. C. they exert forces on each other respectively proportional to their velocities. D. they exert forces on each other respectively inversely proportional to their masses. E. their accelerations are proportional to their masses.

Physics & Space Science

Which of the following nuclear reactions is forbidden?

A.
B.
C.
D.

Physics & Space Science