A 15.0-g conducting rod of length 1.30 m is free to slide downward between two vertical rails without friction. The ends of the rod maintain electrical contact with the rails. The rails are connected to a 4.80-Ω resistor, and the entire apparatus is placed in a 0.390-T uniform magnetic field. Ignore the resistance of the rod and rails.

(a) What is the terminal velocity of the rod?
(b) At this terminal velocity, compare the rate of change of the gravitational potential energy with the power dissipate in the resistor.

a electromagnetic waves

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.