%3Cp%3EWhat%20is%26nbsp%3Bthe%26nbsp%3Btemperature%26nbsp%3Bchange%26nbsp%3Bof%2
ID: 2270844 • Letter: #
Question
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/ Answer
b)
Thermal Conductivty:
Q/t=KA(dT)/L
Q/t= rate
K=thermal conductivity=0.200 W/m*K
A=area=4.0*5.5=22m^2
dT=temperature difference=3K
L=thickness of the floor=0.015m
Plug everything in.
(0.200)*(22)*(3)/(0.015)
= 880 J/S.
or 880 Watts.
c)
Heat lost = Heat gained
Heat =Q = mc(delta T)
The copper has a specific heat c
It starts at a temperature T1 and ends at T2
It has a mass m
Likewise for the mass of water but different c, m and T1
The initial heat in the mass of copper = the final heat in the mas of copper + the increase of heat in the mass of water
Solve for mass of copper
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