The physics underlying photovoltaic solar cells is
A) electron diffraction.
B) photon capture.
C) the photoelectric effect.
D) none of the above
Answer: C
You might also like to view...
A source emits sound at a fixed constant frequency f.If the source moves away from you faster than the speed of sound in air, you do not hear any frequency but instead a ‘sonic boom.'
a. True b. False Indicate whether the statement is true or false
Why would a decrease in the density of the ozone layer create a public health concern?
a. The greenhouse effect would not be as efficient and the temperature of Earth would decrease. b. The greenhouse effect would be more efficient and the temperature of Earth would increase. c. Plant life would no longer have the ozone it needs for photosynthesis to create chlorophyll. d. Ultraviolet radiation from the Sun would bombard Earth. e. none of the above
Free Fall: Brick A is dropped from the top of a building. Brick B is thrown straight down from the same building, and neither one experiences appreciable air resistance. Which statement about their accelerations is correct?
A. The acceleration of A is greater than the acceleration of B. B. The acceleration of B is greater than the acceleration of A. C. The two bricks have exactly the same acceleration. D. Neither brick has any acceleration once it is released.
You observe a star in the disk of the Milky Way, and you want to plot the star on an H-R diagram. You will need to determine all of the following, except the
A) spectral type of the star. B) distance to the star. C) apparent brightness of the star in our sky. D) rotation rate of the star.