Your new toaster has two separate toasting units, each of which consumes 600 Watts of power when it is in use. When you operate one unit, a current of 5 Amperes flows through the wiring in your home and the wires waste about 1 Watt of power handling that current. If you operate both toasting units at once, your toaster consumes 1200 Watts - than a./ how much current flowing through the wiring in your home

Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*