The nucleus of a tellurium-130 atom contains 52 protons. Assume that the nucleus is a sphere with radius 5.51 fm and with the charge of the protons uniformly spread through the sphere. At the nucleus surface, what are the magnitude and direction of the electric field produced by the protons

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate