A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
What are the units of the energy of a photon and the energy of light? I know light intensity is the number of photons that corresponds with the wavelength so from the information I would guess the unit would be number of waves per second.
anonymous
 one year ago
What are the units of the energy of a photon and the energy of light? I know light intensity is the number of photons that corresponds with the wavelength so from the information I would guess the unit would be number of waves per second.

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Energy of a photon=hv h=Planck constant. Its units are J*s or joules times seconds v=frequency. Its units are 1/s Energy of a light is energy of photon, since photon is a packet of light. Do you mean speed of light?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I understand now. I was never given the units to Planck's constant. I was just give a number.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The question is just asking for units Planck constant is 6.626 x 10^24 J*s btw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, i was not shown the j*s  i was only shown the number. So when i would do calculations with planck's number the units would not cancel completely because i did not know the j*s.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You do not need numbers to figure out the units. I give you explanation, but not the answer. (I know the answer) You can figure the answer by my info. Example problem: Velocity=distance/time Units of distance=m Time=s Velocities units would be m/s Just wondering if you can figure it out.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.1\[E = hv \] \[E = \frac{ hc }{ \lambda }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I understand what you are saying. I did not know the units for planck's constant so when I would try a practice problem like this one, it would go like this. What is the energy of a photon of green light with a 520nm wavelength? \[E _{p}= \frac{ hc }{ \lambda } \] \[E _{p}= (6.626x10^{34})(2.998x10^{17}nm/s)(\frac{1}{ 520nm })\] so, at the end of the day I would be left with a unit of 1/s(which did not make sense to me) because I did not know the full mangitude of planck's.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know the units for the energy of a photon now? If you do, then I can continue to solving problems with you.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, it is in joules.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0If I modified the question and said there were 10 photons in the wave, what would be the answer.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Are photons measured in mols?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You are right. It is in joules. Modify which question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What is the overall energy of green light with a 520nm wavelength that contains 10 photons?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You would multiply it by 10 since ten more photons means then more energy. E=hv/wavelength only applies to one photon

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would the units still be just joules?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes. Lets say a photon has an energy of 500J 10(500J)=5000J

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How would you measure photons?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Or is it very discrete?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.