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Physics
Physics
Problem
A
25.0
g
25.0\,\text{g}
25.0
g
sample of aluminum (
c
=
0.897
J g
−
1
∘
C
−
1
c = 0.897\,\text{J g}^{-1}\,^{\circ}\text{C}^{-1}
c
=
0.897
J g
−
1
∘
C
−
1
) cools from
60.0
∘
C
60.0\,^{\circ}\text{C}
60.0
∘
C
to
25.0
∘
C
25.0\,^{\circ}\text{C}
25.0
∘
C
. What is the value of
q
q
q
for the aluminum sample? a)
+
7.85
×
10
2
J
+7.85\times10^{2}\,\text{J}
+
7.85
×
1
0
2
J
b)
−
3.65
×
10
3
J
-3.65\times10^{3}\,\text{J}
−
3.65
×
1
0
3
J
c)
−
7.85
×
10
2
J
-7.85\times10^{2}\,\text{J}
−
7.85
×
1
0
2
J
d)
−
1.12
×
10
3
J
-1.12\times10^{3}\,\text{J}
−
1.12
×
1
0
3
J
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