A small electric immersion heater is used to heat 94 g of water for a cup of instant coffee. The heater is labeled "81 watts" (it converts electrical energy to thermal energy at this rate). Calculate the time required to bring all this water from 21°C to 100°C, ignoring any heat losses. (The specific heat of water is 4186 J/kg.K.) Number i Units

A small electric immersion heater is used to heat 94 g of water for a cup of instant coffee. The heater is labeled "81 watts" (it converts electrical energy to thermal energy at this rate). Calculate the time required to bring all this water from 21°C to 100°C, ignoring any heat losses. (The specific heat of water is 4186 J/kg.K.) Number i Units

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 27P: An engine absorbs three times as much heat as it discharges. The work done by the engine per cycle...

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