Hello I need osme help with these two problems. I was told the ansers but do not undersatnd how the answers were gotten.(adsbygoogle = window.adsbygoogle || []).push({});

1. The power dissipated in lifting a 2.0 kg ball vertically at 3.0m/s equals what?

The answer is 59 W. ALl I know is that power equals Work/ delta T but there is no time for this one.

2. Increasing the orbital radius of a satellite by a factor of 2 requires its period to change by a factor of what?

For thi I know R^3/T2=R^4/T^2.

I would appreciate any help.

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

Dismiss Notice

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!

# Homework Help: Power and Satellites

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