A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • one year ago

A radiation detector exposed to sunlight records the energy falling on a given area each second. If such a detector has a reading of 0.430 cal cm−2 min−1, how many photons of sunlight are striking each cm2 in one minute? Assume the average wavelength of sunlight is 470. nm. (4.184 J = 1 calorie).

  • This Question is Closed
  1. aaronq
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    First convert the energy value given from calories to joules. Next find the energy of one photon of that wavelength, using Planck's equation. \(\sf E_{photon}=\dfrac{hc}{\lambda}\) Lastly divide the energy value given by the energy value that corresponds to 1 photon (from equation above).

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you! This helps a lot. :)

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.