The amount of heat required to raise 1 kg of
pure water by 1 Co is called
a) a joule.
b) a kilocalorie.
c) a Btu.
d) a calorie.
b
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Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart
Half way between the two plates the electric field has magnitude E. If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates? A) 4E B) 2E C) E D) 0 E) E/2
What role did Percival Lowell play that led to the discovery and naming of Pluto?
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How much work do you do when you lift a 3 N apple by 2 m during a time of 6 s?
A) 6 J B) 1 J C) 1.5 J D) 12 J E) 18 J
A supersonic plane passes overhead at a speed of 500 m/s. If you hear the sonic boom (shock wave) 4.00 s after the plane is directly overhead, at what altitude is the altitude the plane flying? Assume the speed of sound in air is 340 m/s
A) 1.36 km B) 2.16 km C) 1.85 km D) 2.45 km E) The plane is not flying fast enough to produce a shock wave.