One mole of helium gas expands adiabatically from 2 atm pressure to 1 atm pressure. If the original temperature of the gas is 20°C, what is the final temperature of the gas? (? = 1.67)
222 K
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Emission lines from different ionization states of the same element appear in the same place in the spectrum
Indicate whether the statement is true or false
The reason the north pole of a bar magnet free to rotate points north is because
a. the south geographic pole of the earth is the earth's magnetic north pole. b. the south geographic pole of the earth is the earth's magnetic south pole. c. there is a net accumulation of negative magnetic charge at the earth's south geographic pole. d. there is a net accumulation of positive magnetic charge at the earth's north geographic pole. e. the north geographic pole of the earth is the earth's magnetic north pole.
A boy fires a spring-loaded Ping-Pong ball gun. Briefly compare the forces and impulses on the gun and the ball. Which has more momentum? Which moves faster?
What will be an ideal response?
This diagram represents the solar nebula early in its history and shows the location of the frost line. Suppose you discover an object that is made of metal, rock, and ice. In which of the four regions shown in the diagram did it form?
A) Region 1 B) Region 2 C) Region 3 D) Region 4