...from... ? Mars to Earth if the distance between the two planets is approximately 8x10^7 km?
I've been trying to find out this problem for quite some time now. I think my problem is the conversion from km to m? If the speed of light=frequency x wavelength...and in this case the frequency is not needed. So it would be 3x10^8/8x10^7? Am I doing this right. And then I also need help on converting it and making sure it is the right units.
Also, if anyone knows...what is the energy of a 421 nm photon emitted from a light source? Answer in units of J. Because I have absolutely no idea where to start!
Any help would be greatly appreciated! Thank you soooo much!
I've been trying to find out this problem for quite some time now. I think my problem is the conversion from km to m? If the speed of light=frequency x wavelength...and in this case the frequency is not needed. So it would be 3x10^8/8x10^7? Am I doing this right. And then I also need help on converting it and making sure it is the right units.
Also, if anyone knows...what is the energy of a 421 nm photon emitted from a light source? Answer in units of J. Because I have absolutely no idea where to start!
Any help would be greatly appreciated! Thank you soooo much!