The most energy per unit mass can be extracted from
A) coal.
B) petroleum.
C) natural gas.
D) uranium.
Answer: D
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Even in degenerate matter, pressure depends on temperature
a. True b. False Indicate whether the statement is true or false
Which star is the hottest star?
A) M B) G C) O D) A E) Can't tell from information provided.
Talk-radio station KOOK is at approximately 90 megahertz on the radio dial. This means that KOOK broadcasts
A) an electromagnetic wave whose frequency is 90 vibrations/second. B) an electromagnetic wave whose frequency is 90 × 106 vibrations/second. C) an electromagnetic wave whose wavelength is 90 × 106 vibrations per second. D) a sound wave whose frequency is 90 × 106 vibrations/second. E) a sound wave whose frequency is 90 vibrations/second.
One phenomenon or experiment that supports the wave theory of matter is
A) the Michelson-Morley experiment. B) the tiny flashes that are observed when a light beam strikes a screen. C) interference effects with light. D) the tiny flashes that are observed when an electron beam strikes a screen. E) the double-slit experiment with electrons.