Posted by **charlie** on Thursday, June 11, 2009 at 3:43pm.

Keplers third law I understand.

T^2/a^3 of one planet = T^2/a^3 second planet.

But I can't do the algebra to solve for the second planet's a^3 (semimajor axis)

Would someone walk me through the steps please? Thanks.

## Answer This Question

## Related Questions

- trigonometry - If a planet has a semimajor axis of 2 AU (astronomical units) a) ...
- Physics - weighing a planet - Explain how you can weigh a planet? ( Is it by the...
- PHYSICS PLEASE HELP !!!!! - On some planet with a radius of 8,553 km and a mass ...
- Astrophysics - You know M(r) = v^2r /G d = distance; s= speed Planet 1: d=2/s=...
- science - if all of the following imaginary planets were the same distance from ...
- Physics - A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a...
- Physics - At planet X, there is another planet called Y about 34 million light ...
- space - Keplers second law notes that a planet should move fastes at aphelion. ...
- college - A spaceship lands on the planet whose radius is 5 times that of planet...
- physics.... - Spherical planet A has mass m and radius r. Spherical planet B has...

More Related Questions