Question 1 of 7 >
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 17.0 days on
average to complete one nearly circular revolution around the unnamed planet. If the distance from the center of the moon
to the surface of the planet is 2.120 x 10km and the planet has a radius of 3.750 x 10 km, calculate the moon's radial
acceleration a.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

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?