Allison pulls on a refrigerator with 200 N of force. Fred helps her out and pulls on the refrigerator in the same direction with
300 N of force. What is the net force on the refrigerator?
N

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

An object's buoyant force and weight mean the same thing.a. trueb. false