Avelocity field is given by where x and y are in feet (u and v are in ft/s). (a) plot the one streamline that passes through the point: x 0 and y-0. (b) explain how you figure out the direction of flow along this one streamline. [hint, pay attention to when x and y are positive or negative, or when the streamline crosses either axis.] (c) what might be going on at the origin?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

What will a positive and a negative charge do if they are separated from each other?