One kelvin unit is equivalent to
a. 9/5 Fahrenheit degrees.
b. 1 Fahrenheit degree.
c. 2 Celsius degrees.
d. 1.8 Celsius degrees.
a
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A capture by a target nucleus of uranium-235 is most apt to occur for which type of "bullet" particle?
a. low velocity alpha particle b. low velocity proton c. high velocity neutron d. low velocity neutron
A 30-N box is pulled upward 6.0 m along the surface of a ramp that rises at 37° above the horizontal. How much work does gravity do on the box during this process?
A) -1100 J B) -110 J C) -140 J D) -180 J E) 120 J
A rough surface for infrared waves may be polished for
A) radio waves. B) light waves. C) both of these D) neither
If heavier elements are more stable when they have more neutrons, what happens to the heaviest elements?
a. They have very large nuclei to sustain the number of neutrons needed for stability. b. Above a certain atomic mass, there are no stable elements. c. For high enough atomic mass, there is no longer a rule to determine which nuclei are stable. d. The curve reverses and the nuclei of the heaviest elements are more even matches of protons and neutrons. e. The curve reverses completely and the nuclei of the heaviest elements are stable with many more protons than neutrons.