A= 29 B= 39 C=139 D= 12

To make the rod move to the right at speed v, you need to apply an external force on the rod to the right. If 1= B cm, B filed is D/50 T, O v= B/5 m/s and R= C/10 0. O O (a) Explain and determine the current I? O (b) determine the magnitude of the required force. (c) What external power is needed to move the rod? O O O A C number of loop square coil of wire, with side length B/5 cm and total resistance C 2, is positioned perpendicular to a uniform D/100 T XXXXXXXXX! XXX xx xx > magnetic field. It is quickly pulled from the field at constant speed B=0 X (moving perpendicular to B) to a region where B drops abruptly to zero. At t = 0, the right edge of the coil is at the edge of the field. It FMX X takes B/50 s for the whole coil to reach the field-free region. Find X X X X (a) the rate of change in flux through the coil X X X (b) the emf and current induced. XXXXX (c) How much energy is dissipated in the coil? (d) What was the average force required (Fext)? When unpolarized light is incident on a sheet of polarizing material with a transmission axis oriented vertically, what percentage of the light is transmitted through the material? Then you insert the second polarization sheet with 30 to x axis, what percentage of the light is transmitted through the second polarizer