An infinitely long line of charge has a linear charge density of 7.50×10^−12 c/m . a proton is at distance 14.5 cm from the line and is moving directly toward the line with speed 3000 m/s . how close does the proton get to the line of charge? express your answer in meters.

Describe the function of the endomembrane system? what organelles are involved?

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?

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?