The iron nucleus has the greatest binding energy of any nucleus
A) True B) False
B
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If one could observe the individual atoms making up a piece of matter and note that during a process of change their motion somehow became more orderly, then one may assume which of the following in regard to the system?
a. increases in entropy c. gains in thermal energy b. decreases in entropy d. positive work done on
Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 1536 Hz. You move between the speakers, along the line joining them, at a constant speed of 2.8 m/s
What beat frequency do you observe? The speed of sound in the room is 330 m/s. A) 13 Hz B) 431 Hz C) 26 Hz D) 4.7 Hz E) 118 Hz
Hot, low-density gas can be detected in galactic clusters through X-ray emission. The gas is important in understanding dark matter because ____
a. dark matter is responsible for heating the gas b. dark matter must make the cluster massive enough to hold on to the hot gas c. the gas may be the source of dark matter d. the gas is clumped in empty places between galaxies where there is more dark matter e. the gas is produced by dark matter
When we say that the speed of sound is measured under adiabatic conditions we assume that
a. the time associated with heat conduction is slow relative to the speed of the wave. b. no heat can flow between the system and its surroundings. c. the speed of the wave is directly proportional to the bulk modulus. d. the speed of the wave is proportional to the square root of the bulk modulus. e. air is an ideal gas.