20. which scientist's gold foil experiment led him to discover the nucleus of an atom? a) rutherford b) thompson c) bohr d) chadwick

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

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?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?