Which one of the following is not a surface feature
of the Moon?
a) a maria.
b) A ray.
c) A node.
d) A rill.
c
You might also like to view...
_____ are small icy bodies that orbit the Sun and produce tails of gas and dust when they approach the Sun
A) Comets B) Asteroids C) Meteorites D) Stars
A 3.00 kg mass is located at x = 2.0 cm and y = 4.0 cm. A 3.00 kg mass is located at x = -5.0 cm and y = 2.0 cm. A 4.00 kg mass is located at x = 3.0 cm and y = -3.0 cm. Where is the location of the center of mass (x, y)?
A. (0.60 cm, 0.30 cm) B. (0.90 cm, 2.0 cm) C. (3.0 cm, 1.0 cm) D. (0.30 cm, 0.60 cm) E. (3.9 cm, 3.0 cm)
(d) A spaceship of mass 2m originally at rest burns some matter–antimatter fuel until the ship’s mass is m. The light energy ejected from the ship in this process has total energy m as well.
A. C B. F
The conversion of mass to energy of other forms via nuclear fission is
A) less than 1%. B) about 10%. C) about 20%. D) about 30%. E) more than 30%.