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?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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