g A planar loop of wire (i. e. the object would lie flat on a page) with areaAis oriented so it is parallel tothex−yplane. It is released from rest at a heightz=h >0 and accelerated downwards with constantaccelerationa. The loop has resistanceRand is exposed to a magnetic field~B= (h−z)2ˆz. a) Find how much current runs though the wire, include the direction when seen looking down from abovethe loop. b) How much energy was consumed by the loop since being released when it reaches the ground atz= 0

Your physics assignment is to figure out a way to use electricity to launch a small 6.0-cm-long plastic drink stirrer. you decide that you'll charge the little plastic rod by rubbing it with fur, then hold it near a long, charged wire, as shown in figure p23.56 . when you let go, the electric force of the wire on the plastic rod will shoot it away. suppose you can uniformly charge the plastic stirrer to 10 nc and that the linear charge density of the long wire is 1.0 x10-7 c/m. what is the net electric force on the plastic stirrer if the end closest to the wire is 2.0 cm away?