A 5-kg fish swimming at a speed of 1 m/s swallows an absent-minded 1-kg fish at rest. The speed of the larger fish after lunch is
A) 1/2 m/s.
B) 2/5 m/s.
C) 5/6 m/s.
D) 6/5 m/s.
E) 1 m/s.
Answer: C
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When holes are drilled through the wall of a water tower, water will spurt out with the greatest speed from the hole closest to the
A) bottom of the tower. B) middle of the tower. C) top of the tower. D) all the same
In the spectrum of white light which one of the following colors corresponds to the highest temperature?
A) Yellow B) Violet C) Green D) Red E) Orange
The sub-atomic particle known as the "neutrino" was originally hypothesized
A) because it was thought that radiant energy is actually a form of energy. B) in order to preserve conservation of electric charge in a certain type of nuclear process. C) in order to preserve Newton's laws in a certain type of nuclear process. D) because it was thought that thermal energy (or heat) is actually a form of energy. E) in order to preserve the law of conservation of energy in a certain type of nuclear process.
A watt is equal to
a. 746 horsepower. b. one calorie. c. one joule. d. 1 J/s. e. a unit of energy.