The moon requires about 1 month (0.08 year) to orbit earth. its distance from us is about 400,000 km (0.0027 au). use kepler’s third law, as modified by newton, to calculate the mass of earth relative to the sun.

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

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

Ajoint produces movement when its angle decreases. which type of movement is it?