The internal energy of an ideal gas depends on
A) its pressure.
B) its volume.
C) its temperature.
D) its temperature and pressure.
E) its temperature, pressure, and volume.
C
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Each atom in a sample of lithium (Z=3, atomic mass 6.941 u) has all of its electrons removed. If exactly 1.0 C was collected in this way, what is the mass of the lithium sample?
A. 0.010 ?g B. 0.024 ?g C. 0.031 ?g D. 0.072 ?g
A student constructs an astronomical telescope and wishes it to have a magnification of 10. If the telescope has an objective lens of focal length 0.50 m, what must be the focal length of the eyepiece?
A) 2.5 cm B) 5.0 cm C) 10 cm D) 25 cm
What is the largest satellite (moon) in the Solar System?
A. Saturn's moon, Titan B. Neptune's moon, Triton C. Jupiter's moon, Ganymede D. Earth's moon
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up. Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still connected to the battery
After this is done, we find that A) the energy stored in the capacitor had decreased. B) the voltage across the capacitor had increased. C) the charge on the capacitor had increased. D) the charge on the capacitor had not changed. E) None of these choices is true.