Recent content by whiterabbit90

I just calculated it and got 1.411 x 10-10 I think the problem was I was squaring the entire bottom half of the divide rather than the distance. A stupid mistake but guess we all make them. I assume since both equations give the same answer that is the right answer?

both should be in units of W m-2. In equation 4 I converted Mpc to metres same luminosity is Watts. My equation for 4 looks like this rearranged. L= F x 4 pi r2 Putting in the values gives 1.2 x 10-11 W m-2(F) x 4 pi (7.44x 1025)2 m (r2) = 8.35 x 1041 W (L) With that I get luminosity to...

I tried both, equation 4 gives me an answer of 4.932 x 10-9 and using divide and square i get 1.411 x 10-10 both seem plausible answers.

Homework Statement An object gives out a spectral line of 919nm compared to that of 589nm in a laboratory. It has a brigtness of 1.2 x 10-11 W m-2. The objective is to find out the brightness of the object if it were at 700 Mpc. Homework Equations 1. Z (redshift)= change in wavelength...