5. A 220V 600-watt electric coffee maker is used to make a total of 10 cups of coffee in 45 minutes. Determine the following : a. Current consumed by the coffee maker and the electrical energy consumed in kWh b. the rise in temperature of the device. Note: • specific heat of water =4200 J/kg-K 1 cup = 236 grams

5. A 220V 600-watt electric coffee maker is used to make a total of 10 cups of coffee in 45 minutes. Determine the following : a. Current consumed by the coffee maker and the electrical energy consumed in kWh b. the rise in temperature of the device. Note: • specific heat of water =4200 J/kg-K 1 cup = 236 grams

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section9.9: Power

Problem 9.6CE

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