5. The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. a. A kWh is a unit of energy it is one kilo-Watt* one hour. What is a kWh in Joules? At this unit price, calculate the cost that would result from each of the following: b. Leaving a 80.0 W porch light on for 2 weeks while you are on vacation c. Making a piece of dark toast in 3.00 min with a 890 W toaster. d. Drying a load of clothes in 40.0 min in a 4900 W dryer 6. If the toaster in part 5 b above is like a perfect resistor what resistance would it have if the operating voltage is 100 V?

5. The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. a. A kWh is a unit of energy it is one kilo-Watt* one hour. What is a kWh in Joules? At this unit price, calculate the cost that would result from each of the following: b. Leaving a 80.0 W porch light on for 2 weeks while you are on vacation c. Making a piece of dark toast in 3.00 min with a 890 W toaster. d. Drying a load of clothes in 40.0 min in a 4900 W dryer 6. If the toaster in part 5 b above is like a perfect resistor what resistance would it have if the operating voltage is 100 V?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter33: Alternating Current Circuits

Section: Chapter Questions

Problem 33.6CQ: As shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor,...

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