a) The power of the immersion heater is 120 Watts. In 10 minutes, the reading falls from 482g to 474g. What is the specific latent heat of water? b) 5.7MJ of heat energy is supplied to 30kg of aluminium that is initially at a temperature of 20°C .If the specific heat capacity of aluminium is 950J/kg °C, determine its final temperature ?

a) The power of the immersion heater is 120 Watts. In 10 minutes, the reading falls from 482g to 474g. What is the specific latent heat of water? b) 5.7MJ of heat energy is supplied to 30kg of aluminium that is initially at a temperature of 20°C .If the specific heat capacity of aluminium is 950J/kg °C, determine its final temperature ?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter21: Heat And The First Law Of Thermodynamics

Section: Chapter Questions

Problem 68PQ

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a) The power of the immersion heater is 120 Watts. In 10 minutes, the reading falls from 482g to 474g. What is the specific latent heat of water?

b) 5.7MJ of heat energy is supplied to 30kg of aluminium that is initially at a temperature of 20°C .If the specific heat capacity of aluminium is 950J/kg °C, determine its final temperature ?

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