What is the direction of the force for a positive charge
moving to the left with a magnetic field in the upward
direction?
O out of the screen
O into the screen
O upward
downward

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