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fredd [130]
3 years ago
13

Photoelectrons with a maximum speed of 7.00 · 105 m/s are ejected from a surface in the presence of light with a frequency of 8.

00 · 1014Hz. If the mass of an electron is 9.1 · 10-31 kg, calculate the maximum kinetic energy of a single electron, in joules.
_____ J

6.3 x 10-25
4.4 x 10-19
3.2 x 10-25
2.2 x 10-19
Physics
1 answer:
aliya0001 [1]3 years ago
3 0

Answer:

2.2 x 10-19

Explanation:

Kinetic Energy = 1/2 m v ^2

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