Purchase Solution

# Energy of ejected electrons

Not what you're looking for?

A magnesium surface has a work function of 3.68 eV. Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons. Express your answer in electron volts.

##### Solution Summary

The solution calculates the kinetic energy of ejected electrons when electromagnetic waves strike the surface.

##### Solution Preview

Electromagnetic waves with a wavelength of 215 nm have energy=
E=hf
where
h= Planck's constant= 6.63E-34 J s
f=frequency= c/ wavelength;
wavelength= 215 nm= 2.15E-07 m
c= speed ...

##### Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

##### Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

##### Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.