Asquare loop of wire lies in the x, y plane with opposite corners at (0, 0) and (a, a), and is situated in a steady magnetic field b = b0(yz xˆ + xz yˆ + xy zˆ). if the loop moves with velocity v = vxˆ, calculate the motional emf e = h (v×b)· dl in terms of a, b0, and v. what is the direction of current flow in the loop?

Which of the following statement is false

Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.