Q: Calculate the energy of a wavelength using this formua: E=h*f
Key:
E= energy
H= Planck's constant (6.626*10^-34) units:js
f= frequency
Frequecny formula: 3.0*10^8 m/s (speed of light)/ wavelength (630nm)
*NOTE: I've already done this, I just need someone to check my work. This is what I did:
I found the frequency by: 3.0*10^8 m/s divided by 630nm.
I got 476190.4762 for frequency (please help with units, I don't know how to put them together)
Then I multiplied plancks constant with the frequency:
6.626*10^-34 * 476190.4762 to get:
15361905 (rounded) as the energy.

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COULD SOMEBODY PLEASE CHECK MY WORK, I have a lab report and I really want to get this right. :(

you should use scientific notation when doing this problem
630 nm = 630 x 10^-9 m = 6.3 x 10^-7 m

f= 3.0*10^8/6.3*10^-7 = 4.76*10^14 Hertz (1/sec)

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