of water for a cup of instant coffee. The heater is labeled" 170 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 Units e Texthook and NModi

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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A small electric immersion heater is used to heat 64 g of water for a cup of instant coffee. The heater is labeled “ 170 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
Units
eTexthook and Modia
Transcribed Image Text:A small electric immersion heater is used to heat 64 g of water for a cup of instant coffee. The heater is labeled “ 170 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 Units eTexthook and Modia
An aluminum flagpole is 26 m high. By how much does its length increase as the temperature increases by 19 C°? (The linear expansion
coefficient of aluminum is 23 x 106/Co.)
Number
Units
Transcribed Image Text:An aluminum flagpole is 26 m high. By how much does its length increase as the temperature increases by 19 C°? (The linear expansion coefficient of aluminum is 23 x 106/Co.) Number Units
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