A rod with resistance R lies across frictionless conducting rails in a constant uniform magnetic field B, pointing out of the paper. Assume the rails have negligible fig resistance. The magnitude of the force that mu applied by a person to pull the rod to the right at constant speed vis:

I have used Faradays Law and Ohms Law to solve part a and part b but cannot seem to get the right answer :( I first used: then then Part a is 0.0227 but i get 0.026.

A rectangular conducting loop of width L, resistance R, and mass m is in a magnetic field B, as indicated in the diagram below. The magnetic field is constant throughout the shaded region (and zero outside the shaded region) and is horizontally oriented into the page. If the loop is dropped, as it crosses the threshold of the magnetic field, it will reach a terminal speed vt. Find an expression for vt (ignoring air drag).

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Please just help with this question: What would be the terminal velocity of the rod if all the conditions of part (b) of the problem where held, except there was also friction with a kinetic coefficient of ?k=0.0215? (Note: I believe the answer for b) is the induced current of 0.049 A if it helps)

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Magnetic flux is measured in webers which can be expressed in units of V*s (V = volts). The magnetic flux was 14.993 V*s. What is the magnetic flux in kV*µs?

A square loop (each side is 10 cm) of wire with Resistance 100Ω is moved at a constant speed of 30cm/s across a uniform magnetic field 2 T, confined in a square region (Each side of the square is 20cm). (a) Graph the force needed to move the loop at a constant speed from -20 cm to 20cm (as shown in the figure). What will be the maximum force required? Assume that the force pointing to the right as positive  (b) Graph the current induced in the loop as a function of distance from -20cm to 20cm. Assume clockwise current to be positive. What will be the maximum value of current?  Hint: The figure is drawn not to scale