Length is measured in what units in the
British system?
a) pounds
b) feet
c) meters
d) kilograms
b
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Just as a sustained flow of water in a hydraulic circuit needs a pump, the flow of charge in an electric circuit needs
A) current. B) voltage. C) resistance.
A clarinet behaves like a tube closed at one end. If its length is 1.0 m, and the velocity of sound is 344 m/s, what is its fundamental frequency (in Hz)?
a. 264 b. 140 c. 86 d. 440 e. 172
A K? x-ray results from which of the following electron transitions in an excited atom?
(a) 2s?1s (b) 2p?1s (c) 3p?1s (d) 3p?2s
A rod has a length 2.00000 m at 10.0°C. The length of the rod increases to 2.00060 m when the temperature increases to 30.0°C. What is the coefficient of linear expansion of the material from which the rod is made?
A) 2.0 × 10-5/K B) 2.5 × 10-5/K C) 1.5 × 10-5/K D) 1.0 × 10-3/K E) 1.0 × 10-5/K