A satellite has a circular orbit around the Earth. Its orbital period is 8 hours. Mass of satellite 1000kg Calculate it altitude above the Earth's surface.
Calculate its total energy, E = K + U.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

When using the scientist method, which step comes last?