In composition, asteroids and meteoroids are most like:
A) jovian planets.
B) Kuiper Belt objects.
C) comets.
D) terrestrial planets.
E) the moons of Jupiter.
D
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Two events occur 5.0 s apart in time and 3.0 s apart in space. A clock traveling at a speed of 0.60 can be present at both these events. What time interval will such a clock measure between the events?
A. 8.0 s B. 5.8 s C. 5.0 s D. 4.0 s E. 2.0 s F. Other (specify)
A roofer lifts supplies a height of 20. m with a hand-operated winch. How long would it take him to lift a 200. kg load, if the winch has an efficiency of 90%, and the rate at which the winch can do work is 0.80 hp?
What will be an ideal response?
An important condition for the operation of the Falkirk Wheel is that
A) water in each caisson have the same depth. B) ships carried are more or less equal in weight. C) no water spill when a ship enters a caisson. D) all of the above E) none of the above
What is the mass of air in a room that measures 5.0 m × 8.0 m × 3.0 m? (The density of air is 1/800 that of water)