Calculating Wavelength without distance

  • Thread starter Thread starter StotleD
  • Start date Start date
  • Tags Tags
    Wavelength
AI Thread Summary
To calculate the wavelength of light with a frequency of 5.58×10^14 Hz, use the equation c = fλ, where c is the speed of light. Rearranging the formula gives λ = c/f. The speed of light in a vacuum is approximately 3.00×10^8 m/s, which can be used alongside the given frequency to find the wavelength. By substituting the values into the equation, the wavelength can be determined without needing any distance measurement. This method effectively allows for the calculation of wavelength using frequency alone.
StotleD
Messages
21
Reaction score
0
A question has been given to me: what is the wavelength for light with a frequency of 5.58×1014 Hz? How do you find the wavelength without the distance?
 
Physics news on Phys.org
You can use the equation c = f\lambda, where c is the speed of light (in free space).
 
That formula includes the wavelength which is what I am trying to solve for. I am a first year physics student so you'll have to take it easy.
 
Well if it didn't include the wavelength you couldn't solve for it, could you?

c= λf so λ= c/f.

You are given the frequency, f, and you know, or can look up, the speed of light, c.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top