Supernovae are triggered because iron releases the most fusion energy of any element
a. True
b. False
Indicate whether the statement is true or false
False
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What do moonquakes reveal about the Moon?
A) It has a strong magnetic field generated by a large molten core. B) It has a differentiated core, displaced away from us by the Moon's rotation. C) Its small, partially molten core has been pulled toward us by tidal forces. D) The Moon has been geologically dead throughout its entire history. E) The Moon is quite active, almost as much so as Jupiter's moon Io.
First Law of Thermodynamics: A sealed rigid tank contains 29 moles of an ideal gas, at an initial temperature of 270 K. The pressure of the gas is increased until the final pressure equals 1.90 times the initial pressure. The heat capacity at constant pressure of the gas is 24.0 J/mol ? K. How much heat is absorbed by the gas during this process? (R = 8.31 J/mol ? K)
A. 110 kJ B. 170 kJ C. 230 kJ D. -52 kJ E. 7.0 kJ
In the Northern Hemisphere, air rushing into a low-pressure region
A) spirals in a clockwise direction. B) sinks. C) spirals in a counterclockwise direction. D) rises.
How long after the Big Bang did nucleosynthesis, the combining of protons and neutrons together to form nuclei, begin to occur?
A) 3 minutes B) 10-2 seconds C) 5000 years D) 109 years