Helium condenses into the liquid phase at approximately 4 K. What temperature, in degrees Fahrenheit, does this correspond to?
a. ?182
b. ?269
c. ?118
d. ?452
e. ?484
d
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Which will cool a drink faster?
A) ice cubes B) crushed ice C) no difference for the same mass of ice
Consider a wire in a magnetic field, as shown in the following figure, with a current flowing upward through it. What will happen to the wire?
a. The wire will be forced toward the north pole.
b. The wire will be forced perpendicular to the plane of the magnetic field, into the page.
c. The wire will be forced perpendicular to the plane of the magnetic field, out of the page.
d. The current will cease flowing.
e. The wire will be forced toward the south pole.
A mole of oxygen (O2 ) molecules and a mole of carbon dioxide (CO2 ) molecules at the same temperature and pressure have
A) the same number of atoms. B) different average kinetic energy per molecule. C) the same number of molecules. D) the same average molecular speeds. E) different volumes.
All three types of particles found in atoms are electrically charged
Indicate whether the statement is true or false