Recent content by FreeAnnyong

Ah, you're right, I was stupidly using the full surface area of the Earth instead of a cross section.

Homework Statement The energy reaching Earth from the Sun at the top of the atmosphere is 1.36x10^3 W/m^2, called the solar constant. Assuming that Earth radiates like a blackbody at uniform temperature, what do you conclude is the equilibrium temperature of Earth? Homework Equations...

I've been trying your suggestion, and I'm still getting nowhere. I try setting up the conservation of energy equation but I keep ending up with everything canceling and I just get 0=0. I feel like a complete idiot, but I can't figure out what I'm doing wrong.

Homework Statement When a beam of high-energy protons collides with protons at rest in the laboratory (e.g., in a container of water or liquid hydrogen, neutral pions are produced by the reaction p+p --> p+p+(pion). Compute the threshold energy of the protons in the beam for this reaction...