Suppose a car goes over a bump that is curved downward with a radius of 17.8 m. the mass of the car and its passengers is 1750 kg. when the car is at the highest point of the bump its speed is 8.70 m/s. calculate the magnitude of the force in n) exerted by the road on the car at this highest point

Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?