In which of the following situations is the photoelectric effect being demonstrated?
A.
An e...
In which of the following situations is the photoelectric effect being demonstrated?
A.
An electron within an atom absorbs energy when it is hit by a photon and jumps to a higher energy level within the atom.
B.
An electron moves through a sea of electrons within a block of aluminum atoms when a voltage is applied to the metal.
C.
A photon of light travels at the speed of light in a vacuum but moves slightly slower through a medium made of matter.
D.
The color of a substance is determined by the wavelength of electromagnetic radiation that is reflected off of its surface
Answers: 3
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Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?
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Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.
Answers: 2
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Why is it important always to use horizontal bars in unit fractions when performing unit conversions?
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The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.
Answers: 1
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