6. A business park requires 1.2 MW (1 MW = 106 W) of electrical power from a power plant that is 7.0 km distant. Each of the two transmission wires (to the business park and back) has a resistance per length of 0.05 Q/km. a) If the power is transmitted at 120 V, how much power is lost in the power lines (dissipated as heat) before it gets to the town? (Hint: Simply calculate the power lost in the transmission wires assuming that sufficient current flows to deliver 1.2 MW of power). b) How is the situation changed if a 1000:1 step-up transformer is inserted between the power plant and the transmission lines? 8. You are using an electric appliance while barefoot in the bathroom of an old building. The appliance is plugged into 120 V wall power and the outlets of the old building have no GFI. The appliance develops a defect that connects power to the handgrip, so that yOu are between the 120 V potential and the ground. a) Your hands and feet are dry, and the two contact resistances in the problem (between your hand and the appliance, and between your feet and the ground) are large, like 5 K9. Draw the equivalent circuit and calculate how much current flows through your body. Describe what you would feel. b) Your hands are wet and you are standing in a puddle. Ann Arbor water is full of salts (\"hard water\") and very conductive, so the two wet contact resistances are reduced to 50 Q each. How much current flows through your body in this case? Describe what you would feel. 9. A kitchen contains appliances with the following power demands Lamp: 240 W, Juicer: 360 W, Coffee Pot: 480 W, Blender: 720 W, Fondue Pot: 1200 W, Wok: 1440 W. The appliances will be plugged in parallel into a 120 'v' circuit protected by a 20 A circuit breaker, meaning the total current in the circuit is limited to less than 20 A. What combination of appliances will draw the most current without blowing the breaker? What is the total effective resistance of this combination? Name one combination of appliances that will blow the breaker