You are learning about energy transformations in science class. sally's group made this electromagnet using a battery and some wire. describe the energy transformation you see here. a) electrical to magnetic b) magnetic to electrical c) mechanical to magnetic eliminate d) electrical to chemical

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.