Atypical arteriole has a diameter of 0.080mm and carries blood at the rate of 9.6*10^-5cm^3/s. (a) what is the speed of the blood in an arteriole? (b) suppose an arteriole branches into 8800 capillaries, each with a diameter of 6.0*10^-6m. what is the blood speed in the capillaries? (the low speed in capillaries is beneficial; it promotes the diffusion of materials to and from the blood

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?