Mercury and the Moon do not have atmospheres because
A) their surfaces are so cold that any atmospheric gases freeze out onto their surfaces
B) charged particles from the Sun have stripped away their atmospheres
C) they are rotating too rapidly, causing their atmospheres to be thrown out into space
D) their gravities are too weak to prevent atmospheric gases escaping into space
D
You might also like to view...
Liquid crystals have the useful property that
A. they are very strong in one direction but very weak in another. B. their transparency can be changed by applying an electric field. C. they can behave like liquid semiconductors and make computers more flexible. D. they can change from a liquid state to a solid state instantly.
The Copernican model of the solar system has the planets orbit the sun along elliptical paths
Indicate whether the statement is true or false
Thermodynamic Devices: An ideal Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat to the room at the rate of 47 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 237 K. The power requirement to run the heat pump under these operating conditions is closest to
A. 9000 W. B. 7100 W. C. 20,000 W. D. 15,000 W. E. 11,000 W.
The law of gravitation is termed universal because it is a property of all material objects
Indicate whether the statement is true or false