Spectra are often represented as graphs of:
A) distance versus luminosity.
B) temperature versus density.
C) intensity versus wavelength.
D) brightness versus darkness.
C
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Determine the equivalent capacitance of the combination shown when C = 45 ?F.
A. 36 ?F B. 32 ?F C. 34 ?F D. 30 ?F E. 38 ?F
In one-dimensional motion where the direction is indicated by a plus or minus sign, the average velocity of an object has which of the following properties?
a. It is positive. b. It is negative. c. It is zero. d. It can be positive, negative, or zero.
A slice of bread contains about 90 kcal. If specific heat of a person were 1.00 kcal/kg•°C, by how many °C would the temperature of a 70.0-kg person increase if all the energy in the bread were converted to heat?
a. 2.25°C c. 1.43°C b. 1.86°C d. 1.29°C
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a pV diagram) from 110 kPa to 225 kPa
How much work is done on the gas during this expansion? A) -5.2 kJ B) -7.5 kJ C) -7.8 kJ D) -11 kJ E) -12 kJ