lim (kl9356) – Homework 22 – Weathers – (17104)
1
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printout
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have
18
questions.
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before answering.
001
10.0 points
A square hole 10
.
5 cm along each side is cut
in a sheet of copper.
Calculate the change in the area of this hole
if the temperature of the sheet is increased by
76 K. Answer in units of cm
2
.
002
(part 1 of 2) 10.0 points
At 9
◦
C, an aluminum ring has an inner diam
eter of 3 cm and a brass rod has a diameter of
3
.
06 cm.
If the temperature coefficient of expansion
for brass is
α
b
= 1
.
9
×
10
−
5
(
◦
C)
−
1
and the
temperature coefficient of expansion for alu
minum is
α
a
= 2
.
4
×
10
−
5
(
◦
C)
−
1
, to what
temperature must the ring be heated so that
it will just slip over the rod? Answer in units
of
◦
C.
003
(part 2 of 2) 10.0 points
To what temperature must both be heated so
that the ring just slips over the rod? Answer
in units of
◦
C.
004
10.0 points
2
mole
of
xenon
gas
at
37
◦
C
occupies
0
.
294 m
3
.
What is the pressure exerted by the Xe
atoms on the walls of a container? Answer in
units of Pa.
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 Fall '08
 Weathers
 Thermodynamics, Magnetism, Energy, Work, lim

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