The photoelectric effect can be used to measure the value of Planck’s constant. Suppose that a photoelectric effect experiment was carried out using light with ν = 7.50×1017 s-1 and ejected electrons were detected with a kinetic energy of 2.50×10-11 J. The experiment was then repeated using light with ν = 1.00×1018 s-1 and the same metal target, and electrons were ejected with a kinetic energy of 5.00×10-11 J. Use these data to find a value for Planck’s constant.
HINTS: these data are fictional and will give a result that is quite different from the real value of Planck’s constant. Be sure that you do not use the real value of Planck’s constant in any calculations here. It may help to start by thinking about how you would calculate the metal’s binding energy if you already knew Planck’s constant.
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Answers: 3
Chemistry, 22.06.2019 11:30, claudr03
If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.
Answers: 3
Chemistry, 22.06.2019 20:00, rafaelasoareschagas7
The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.
Answers: 3
The photoelectric effect can be used to measure the value of Planck’s constant. Suppose that a photo...
Mathematics, 22.04.2020 00:55
Mathematics, 22.04.2020 00:55
Mathematics, 22.04.2020 00:55