Satellite 1, which has mass M1, orbits earth at a semi major axis r1. Satellite 2 has a mass of 6m1 and orbits at 2r1. What is the ratio of the gravitational force by earth on satellite 2 to the gravitational force by earth in satellite 1?

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?