Aproton is projected into a magnetic field that is directed along the positive x axis. find the direction of the magnetic force exerted on the proton for each of the following directions of the proton's velocity. (a) the positive y direction

Atomic nuclei of almost all elements consist of

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?