Recent content by EK86017

Thank you! It worked with 4pi*r^2

a.) If the average frequency emitted by a 200 W light bulb is 5x10^14, and 10.0% of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second? I solved this part of the problem by finding the energy (E = hf) and dividing 10% of 200W by...