Posted by **Dana** on Monday, April 7, 2008 at 5:58pm.

An electron strikes the back of a TV screen at 1/10 the speed of light.

What is the speed of the electron?

What is the momentum of the electron?

What is the deBrogile wavelength of the electron?

- Physics -
**drwls**, Monday, April 7, 2008 at 6:52pm
v = 0.1 c = ?

momentum = m*v = ?

de Broglie wavelength = h/{momentum) = ?

You do the numbers. You will need to look up the speed of light (c), electrom mass (m), and Planck's constant (h).

I am using nonrelativistic (before Einstein) formulas. The correct formulas will differ by a factor of sqrt [1 - (v/c)^2]= 0.995

- Physics -
**maahy**, Tuesday, April 26, 2016 at 9:28pm
Consider the de Broglie wavelength of an electron that strikes the back face of one of the early models of a TV screen at 1/10 the speed of light

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