00:01
Okay, so for this problem, we're told that we have light with an energy of 3 .396 x 10 -19 j that is being emitted and we're asked to determine the wavelength.
00:11
So we have a couple of equations, e equals h times nu, and then we also have c equals wavelength times nu, lambda times nu.
00:22
So if we solve this equation right here for nu, it would be c over wavelength, and then we can plug that in here.
00:33
So e equals h times c over the wavelength.
00:38
Okay, so what are all of these random things? before i do that though, let's rearrange this one more time.
00:45
Wavelength equals h times c over the energy.
00:50
Okay, here we go.
00:52
So we're looking for wavelength.
00:56
H is 6 .63 x 10 -34, this is planck's constant.
01:02
C is our speed of light in meters per second, so 3 x 10 -8 meters per second...