Question
For a photon with = 730 nm, determine its speed, frequency, energy, and color.
For frequency the formula would be v=c/lambda
3.00x10^8/7.30x10^-7=2.19x10^14/s
Speed c=(v)(lambda)
C=(v)(lambda)
C= (2.19x10^14/s)(1.37x10^-6)=3.00x10^8 I got the wavelength by doing the formula
Lambda=c/v 3.00x10^8 m/s/2.19x10^14/s =1.37x10^-6
Color would be red
Is this correct?
For frequency the formula would be v=c/lambda
3.00x10^8/7.30x10^-7=2.19x10^14/s
Speed c=(v)(lambda)
C=(v)(lambda)
C= (2.19x10^14/s)(1.37x10^-6)=3.00x10^8 I got the wavelength by doing the formula
Lambda=c/v 3.00x10^8 m/s/2.19x10^14/s =1.37x10^-6
Color would be red
Is this correct?
Answers
DrBob222
No. v = c/lambda is right and 3E8/7.30E-7 is right but you must have punched in the wrong numbers because the answer is not 2.19E14. I obtained 4.11E14/Hz
You didn't need to calculate C. You know that;s 3E8 m/s
Likewise, you didn't need to calculate lambda. That's given in the problem as 730 nm so you know 1.37E06 isn't right. You are correct that it is red.
You didn't need to calculate C. You know that;s 3E8 m/s
Likewise, you didn't need to calculate lambda. That's given in the problem as 730 nm so you know 1.37E06 isn't right. You are correct that it is red.