During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the change in internal (thermal) energy of the gas?
A) 2.5 J B) 5.0 J C) 7.5 J D) 10 J E) 0.00 J
E
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How do asteroids differ from comets?
A) Asteroids are rocky bodies and are denser than the comets, which are made of icy material.
B) Asteroids are rocky bodies and are less dense than the comets, which are made of icy material.
C) Asteroids are made of icy material and are denser than the comets, which are more rocky.
D) Asteroids are made of icy material and are less dense than the comets, which are rockier.
E) Asteroids and comets are both made of rocky and icy material, but asteroids are smaller in size than comets.
Which one of the following capacitances in series with a 100-? resistor and 15-mH coil will give a total impedance of 110 ? at 2.0 kHz?
A) 0.56 ?F B) 0.14 mF C) 46 ?F D) 10 ?F
What is the percent uncertainty in the area of a circle whose radius is 1.8 × 104 cm?
A) 1.1% B) 5.6% C) 11% D) 24% E) 56%
Stars to the lower left of the Hertzsprung-Russell diagram tend to be relatively
A) hot and blue. B) long lasting. C) huge and massive. D) yellow and of average size.