Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo.
how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?
4/5 r
1/4 r
1/2 r
1/16 r

What is the most useful equation for electric power?

Blank liquids and gases exert a buoyant force on objects placed in them

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up