0 . 50 m 3 block of solid copper ( ρ = 8960 kg m 3...
0
.
50
m
3
block of solid copper (
ρ
= 8960
kg
m
3
) has an initial temperature of
20.0
◦
C and is dragged along a horizontal concrete slab at a constant speed of 10.0
m
s
.
The coefficient of kinetic friction between concrete and copper is 0.55. Assuming all
of the work done by friction goes to heating the block, what will be the final
temperature of the block if it is dragged for 47.9m? The specific heat of copper is
387
J
kg
◦
C
.
Homework Answers
A block is pulled along a rough horizontal surface by force of magnitude 100 Newtons, at...
A block is pulled along a rough horizontal surface by force of
magnitude 100 Newtons, at an angle of 30 degrees as shown. The
block has a mass M=20.0 kg, and the coefficient of kinetic friction
between the block and the surface is 0.50.
a)The horizontal component of the tension, T, is
b)The normal force exerted upward by the floor on the block has
a magnitude of
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magnitude 100 Newtons, at an angle of 30 degrees as shown. The
block has a mass M=20.0 kg, and the coefficient of kinetic friction
between the block and the surface is 0.50.
a)The horizontal component of the tension, T, is
b)The normal force exerted upward by the floor on the block has
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