Physics, 13.05.2021 17:00, jamarengle2
Students focus ultraviolet light on a metal plate. They measure the number of electrons ejected by the metal. To increase the kinetic energy of each ejected electron, the students should increase —
A. the thickness of the metal plate
B
the intensity of the ultraviolet light
C
the frequency of the ultraviolet light
D
the area of the metal plate
Answers: 3
Physics, 22.06.2019 11:50, brendaesme
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
Answers: 2
Physics, 22.06.2019 16:00, elopezhilario4389
Apersons beliefs and general outlook, which act like filters on the information they receive are called ?
Answers: 1
Physics, 22.06.2019 22:00, jerry7792
1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light
Answers: 3
Students focus ultraviolet light on a metal plate. They measure the number of electrons ejected by t...
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