When ice crystals collapse at the surface of ice, the result is a
A) thin film of water.
B) slippery surface.
C) both of these.
D) none of the above
Answer: C
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If the number of turns on the transformer input is greater than the number on the output, then the transformer
A. outputs greater voltage than at the input. B. outputs less current than at the input. C. outputs greater voltage and current than at the input. D. outputs less voltage than at the input. E. increases the voltage but does not affect the current.
The study of planet Earth is known as
a. mineralogy. b. petrology. c. geology. d. paleontology.
Young's Modulus: When a 125-kg piece of equipment is hung from a steel wire of diameter 6.00 mm, it stretches the wire by 4.00 mm. If instead the wire had a diameter of 3.00 mm, but all else were the same, by what distance would the same equipment stretch the wire?
A. 16.0 mm B. 8.00 mm C. 4.00 mm D. 2.00 mm E. 1.00 mm
The rate of doing work, or of transforming energy, can be measured in
A) joules. B) newtons. C) kilowatt-hours. D) Calories. E) watts.