Why does atmospheric pressure decrease as you go higher in altitude on Earth?
A) The weight of the atmosphere above you decreases with altitude.
B) Gravity gets much weaker with altitude.
C) Temperature decreases with altitude and lower temperature tends to mean lower pressure.
D) There are fewer greenhouse gases at higher altitude.
A) The weight of the atmosphere above you decreases with altitude.
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Venus's crust is thicker than Earth's because
A. Venus has little internal activity, keeping the crust from melting. B. the high temperatures at the surface of Venus have baked the crust. C. volcanic eruptions continuously add more material to the surface. D. rocks on Venus melt at higher temperatures.
Particle A (mass = m, charge = Q) and B (mass = m, charge = 5 Q) are released from rest with the distance between them equal to 1.0 m. If Q = 12 ?C, what is the kinetic energy of particle B at the instant when the particles are 3.0 m apart?
A. 8.6 J B. 3.8 J C. 6.0 J D. 2.2 J E. 4.3 J
Two spaceships are traveling through space at 0.6c relative to the Earth. If the ships are headed directly toward each other, what is their approach velocity, as measured by a person on either craft?
A) 1.2c B) c C) 0.6c D) 0 E) none of the above
Which of the following is not a characteristic of the outer planets?
A) They all have rings. B) They all have large quantities of gas. C) They have very few, if any, satellites. D) They are primarily made of hydrogen and helium. E) Their orbits are separated by relatively large distances.