Hello. I'm stuck on this question. Any help would be appreciated:(adsbygoogle = window.adsbygoogle || []).push({});

The orbit of the Earth about the Sun is almost circular. The closest and farthest distances are 1.47x10^8 km and 1.52x10^8 km, respectively. Determine the maximum variations in a) potential energy, b) kinetic energy, c) total energy, and d) orbital speed that result from the changing Earth-Sun distance in the course of 1 year.

I got part a) no problem. However, I'm not sure about b), c) or d).

Thanks,

Mike

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Help with an Energy Question please

**Physics Forums | Science Articles, Homework Help, Discussion**