The deepest depression found on the surface of Mars is the
A) Caloris basin.
B) Hellas Basin.
C) Valles Marineris rift.
D) Mare Crisium.
E) Mariana Trench.
B
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An asteroid revolves around the Sun with a perihelion 0.5 AU and an aphelion of 7.5 AU. What is its period of revolution?
a. 4 years b. 8 years c. 16 years d. 32 years e. 64 years
A nuclear reaction is said to be exothermic if the total kinetic energy is
A) less after the reaction than before. B) equal both before and after the reaction. C) greater after the reaction than before. D) zero after the reaction.
Three 3.0-W resistors are connected in parallel to a 12.0-V battery. What is the current in any one of the resistors?
a. 0.75 A c. 4.0 A b. 12 A d. 1.3 A
A jet airplane flies at a constant velocity through the air. Its jet engines exert a constant force forward on the plane that exactly balances the force of air friction exerted backward on the plane. These forces are equal in magnitude and opposite in direction. Do we know this because of Newton’s second law or Newton’s third law?
A. Newton’s second law B. Newton’s third law C. Both laws D. Neither (explain)