The color of an opaque object is the same as the light that is
A) transmitted.
B) absorbed.
C) reflected.
D) all of the above
E) none of the above
Answer: C
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As a blackbody becomes hotter it will radiate ____
a. less energy, at a longer wavelength of maximum intensity b. less energy, at a shorter wavelength of maximum intensity c. more energy, at a longer wavelength of maximum intensity d. more energy, at a shorter wavelength of maximum intensity e. more energy, at a constant wavelength of maximum intensity
On an H-R diagram, stellar radii
A) increase diagonally from the lower left to the upper right. B) are greatest in the lower left and least in the upper right. C) decrease from left to right. D) are impossible to determine.
A car travels at a steady 40.0 m/s around a horizontal curve of radius 200 m. What is the minimum coefficient of static friction between the road and the car's tires that will allow the car to travel at this speed without sliding?
A) 1.23 B) 0.952 C) 0.816 D) 0.662 E) 0.736
Air becomes saturated when its temperature
A) falls to a point where water vapor molecules evaporate. B) rises to a point where water vapor molecules condense. C) rises to a point where water vapor molecules evaporate. D) falls to a point where water vapor molecules condense.