What is the change in entropy when 1 kg of ice melts at 0°C is (in J/K)? (LF,ice = 333 J/g.)
a. 335.
b. 603.
c. 1220.
d. 1310.
e. 2160.
c
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Electrons in glass have a natural frequency in the
A) infrared region of the spectrum. B) visible region of the spectrum. C) ultraviolet region of the spectrum.
Three point charges, two positive and one negative, each having a magnitude of 20 ?C are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on the negative charge?
a. 80 N b. 40 N c. 69 N d. 57 N e. 75 N
The carburetor of a car is a pipe with a constriction. Compared to the velocity of flow of a mixture of air and gasoline in the main pipe, the velocity in the constriction will be ________. The pressure in the constriction will be ________ than the pressure in the main pipe.
Fill in the blank(s) with the appropriate word(s).
The value 1.38 × 10^-23 J/K is known as:
a. the universal gas constant. c. Avogadro's number. b. Boltzmann's constant. d. the molar specific.