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hoe (wh4655) – extra
c
redit
01
 
Turner
 
(58220)
1
This printout should have 9 questions.
Multiplechoice questions may continue on
the next column or page – fnd all choices
beFore answering.
001
10.0 points
When an object Falls through air, there is
a drag Force
(
with dimension M
·
L
/
T
2
)
that
depends on the product oF the surFace area oF
the object and the square oF its velocity;
i.e.
,
F
air
=
C A v
2
,
where
C
is a constant.
What is the dimension For constant
C
?
1.
[
C
] =
M
T
·
L
2
2.
[
C
] =
T
·
L
2
M
3.
[
C
] =
T
·
L
M
4.
[
C
] =
M
L
3
5.
[
C
] =
M
L
2
6.
[
C
] =
T
2
·
L
2
M
7.
[
C
] =
M
T
2
·
L
2
8.
[
C
] =
T
2
·
L
M
9.
[
C
] =
M
T
10.
[
C
] =
T
M
002
10.0 points
A cylinder, 16 cm long and 4 cm in radius, is
made oF two di±erent metals bonded endto
end to make a single bar. The densities are
4
.
6 g
/
cm
3
and 6 g
/
cm
3
.
16 cm
4 cm
,
radius
What length oF the lighterdensity part oF
the bar is needed iF the total mass is 4375 g?
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