Which of the following describes impact cratering?
A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface
B) the eruption of molten rock from a planet's interior to its surface
C) The disruption of a planet's surface by internal stresses
D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather
A
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A block is on a frictionless horizontal table, on earth. This block accelerates at 3.6 m/ when a horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/
A horizontal force of 45 N is applied to the block when it is on the moon. What acceleration does this force impart to the block? A) 1.8 m/ B) 1.6 m/ C) 2.0 m/ D) 2.2 m/ E) 2.3 m/
A volume of helium gas has a temperature of 10°C. The same gas twice as hot has a temperature of
A) 20°C. B) 12°C. C) 283°C. D) 293°C. E) none of the above
If the current drawn from a 12-volt car battery is 100 amperes when it is short circuited with a wire, the resistance of the wire is 0.12 ohms
a. True b. False Indicate whether the statement is true or false
The Bohr radius of the hydrogen atom is 0.529 × 10-10 m. What is the radius of the n = 2 state?
A) 0.265 × 10-10 m B) 4.23 × 10-10 m C) 1.06 × 10-10 m D) 2.12 × 10-10 m E) 0.529 × 10-10 m