Which force keep earth in orbit
a) earth’s gravity
b) the moon’s inertia
c) the sun’s gravity
d) the sun’s inertia

What changes would result in a decrease in the gravitational force between two objects? check all that apply.

Anybody wanna ? (picture included? )

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final