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Question #124781
http://prntscr.com/t9b99j
Expert's answer
W
=
A
1
+
A
2
W=A_1+A_2
W
=
A
1
+
A
2
W
=
0.5
(
2
)
(
60
)
+
0.5
(
2
+
6
)
(
80
−
60
)
W
=
140
m
J
=
0.14
J
W=0.5(2)(60)+0.5(2+6)(80-60)\\W=140\ mJ=0.14\ J
W
=
0.5
(
2
)
(
60
)
+
0.5
(
2
+
6
)
(
80
−
60
)
W
=
140
m
J
=
0.14
J
Answer: D
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