Until a train is a safe distance from the station, it must travel at 5 m/s. once the train is on open track, it can speed up
to 45 m/s. if it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train?
m/s4

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?