Arrange from smallest to largest: the BTU, the joule, and the calorie
a. BTU, J, cal
b. J, cal, BTU
c. cal, BTU, J
d. J, BTU, cal
b
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A blob of material in outer space moves at 3 m/s when it collides and sticks to a half-as-massive blob initially at rest. Compared with the initial kinetic energy of the 3-m/s blob, the kinetic energy of the coupled blobs is
A) one-third. B) two-thirds. C) three-quarters. D) not enough information
The energy per unit charge supplied by a battery is its
a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.
You measure a 20-V potential difference across a 7.0-? resistor. What is the current flowing through it?
a. 140 A b. 2.9 A c. 27 A d. 13 A e. 5.2 A
Which of the above substances would have the lowest boiling point?
A) a B) b C) c D) All boil at the same temperature. E) All are gases.