The position, x, of an object is given by the equation x = A + Bt +Ct2, where t refers to time. What are the dimensions of A, B, and C?
A) distance, distance, distance
B) time, time, time
C) distance, time, time2
D) distance, distance/time, distance/time2
E) distance/time, distance/time2, distance/time3
D
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Which of the following would be the strongest clue that a rock you have found is a meteorite rather than a terrestrial rock?
A) It contains a lot of iron. B) It is dark colored. C) It contains elements and isotopes in proportions that are rare on Earth but common in asteroids. D) It is too heavy for you to hold in your hand.
A planet whose distance from the Sun is 3 AU would have an orbital period of how many Earth-years?
A) 3 B) C) D) 9 E) 81
During a nuclear reaction, 1.7 × 10-4 J of energy is released. What is the resulting change in mass of the particles involved? (c = 3.00 × 108 m/s)
A) 5.1 × 10-4 kg B) 4.3 × 10-11 kg C) 1.5 × 10-13 kg D) 4.8 × 10-18 kg E) 1.9 × 10-21 kg
_____ is the conflict between theory and evidence regarding the darkness of the night sky
A) Grandfather's paradox B) Socratic paradox C) Bentley's paradox D) Olbers's paradox