Alead nucleus is spherical with a radius of about 7 ✕ 10⁻¹⁵ m. the nucleus contains 82 protons (and typically 126 neutrons). because of their motions the protons can be considered on average to be uniformly distributed throughout the nucleus. based on the net flux at the surface of the nucleus, calculate the divergence of the electric field as electric flux per unit volume.

An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the ambulance moves toward him? less than 450 hz more than 450 hz 450 hz 0 hz

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Could someone me find the answer to this problem.