Question

find the color of light whose photon has 4.75x10^-19 J of energy

Answer 1

@marcoduuuh

Answer 2

@TuringTest

Answer 3

Woaaah. I don't know this. I sowwy. :(

Answer 4

k no problem marco :)

Answer 5

@phi

Answer 6

do you know the equation for the energy of a photon?
\[ E= \hbar \omega \]

Answer 7

if you can find the wavelength or the frequency, then you can use a table
http://en.wikipedia.org/wiki/Color

Answer 8

i have a table for the colors just need to know how to find the wavelength since thats all the info i have

Answer 9

it is not h it is h bar
http://en.wikipedia.org/wiki/Planck_constant

Answer 10

i know what the h is so thats good enough lol.....but how do i find the wavelength with just the energy??

Answer 11

\[ \omega= 2\pi \nu \]
\(\nu\) is the frequency

Answer 12

yes, you may know h but your equation is wrong
it is either
\[ E= h \nu \]
or
\[ E= \hbar \omega\]

Answer 13

oohhh...wait i think i got it
\[E=h\times\nu\]\[4.75x10^{-19}=6.626x10^{-34}\times\nu\]\[\nu\approx 7.17x10^{14}\]the you do\[c=\lambda\times\nu\]\[3.00x10^8=\lambda\times7.17x10^{14}\]\[\lambda\approx4.18x10^{-7}\]

Answer 14

yes, that looks good

Answer 15

so then you convert that to nanometers and get\[\lambda\approx418.41~nm\]

Answer 16

and thats Violet

Answer 17

I ROCK T(^.^T)