A standard baseball has a mass of 145 g. What is the weight of a standard baseball?

Protons and neutrons are found within the nucleus of an atom

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects