Absolute zero is
a. zero degrees Celsius.
b. the temperature at which atoms have no remaining energy from which we can extract heat.
c. the temperature at which water freezes.
d. zero degrees Celsius and the temperature at which water freezes.
e. none of the others.
b
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Suppose there were no solar wind. How would the appearance of a comet in our inner solar system be different?
A) It would not have a nucleus. B) It would be much brighter in appearance. C) It would not have a coma. D) It would have only one tail instead of two.
An RBE
A) is an effective dose of 1 Gy. B) is equivalent to 3.70 × 1010 decays/s in radium. C) is 10-2 J/kg. D) when multiplied into dosage, yields the effective dose. E) is an SI unit of absorbed dose = 1 J/kg = 100 rad.
An area of 100 cm2 is how many square meters?
A) 1.00 B) 1.00 × 102 C) 1.00 × 10-2 D) 1.00 × 104 E) 1.00 × 10-3
A stretched string is observed to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five equal segments?
A) 240 Hz B) 600 Hz C) 360 Hz D) 120 Hz