A bar of length L = 0.36 m is free to slide without friction on horizontal rails. uniform magnetic field B = 2.4 T, is directed into the plane of the figure. At one end of the rails there is a battery with emf E= 12 V and a switch S. The bar has mass 0.90 kg and resistance 5.0 Ω; ignore all other resistance in the circuit. The switch is closed at time t = 0.

Just after the switch is closed, what is the acceleration of the bar?

What is the acceleration of the bar when its speed is 2.0 m/sm/s?

What is the bar's terminal speed?