Hannah has information about an object in circular orbit around Earth. MEarth = 6. 0 Ă— 1024 kg G = 6. 67 Ă— 10â€""11 StartFraction m Superscript 3 Baseline over kilograms times s Superscript 2 Baseline EndFraction. Rearth=6. 0 x 106 m Using the information given what does Hannah need in order to calculate the tangential speed of the orbiting object ? the mass of the orbiting object the distance of the orbiting object to Earth the orbital period of Earth the radius of Earth.

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?