A car approaches the top of a hill that is shaped like a vertical circle with a radius of 377 m. What is the fastest speed that the car can go over the hill without losing contact with the ground?
m/s

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.

How have the competing explanations' experiments on atoms affected the development of the atomic model?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?