final_11

final_11 - Phy9A-C Page 1 of 2 Cole-UCDavis Physics 9A-C...

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Unformatted text preview: Phy9A-C, 6/8/11 Page 1 of 2 Cole-UCDavis Physics 9A-C Final Exam June 8, 2011 
 Clearly
print
your
name
on
your
blue
book.
 There
are
eight
problems
on
two
pages.

Work
problems
on
your
blue
book.

Please
put
each
 problem
on
a
new
side
of
a
page-you
can
use
the
backs.

Except
for
problem
#1,
no
credit
will
be
 given
for
answers
without
work.

Answers
must
have
correct
units.

Remember
that
the
grader
must
 be
able
to
understand
your
solution
to
give
you
partial
credit;
therefore,
incomprehensible
work
will
 receive
no
partial
credit.

Good
Luck! [1]

Record
the
answer
that
correctly
completes
the
sentence
in
your
blue
book. a)
The
kinetic
friction
force
between
two
solid
surfaces
(
always
|
sometimes
|
never
)
depends
on
the
 surface
area
of
contact. b)

A
general
definition
of
gravitational
force
is
 F√
 =
(
 
 − GMm r 2 ˆ r |
 dp√/dt 
| 
ma√ 
|

all
of
the
above
|
 none
of
the
above). c)
Many
of
the
great
rivers
in
the
world
have
a
tendency
to
flow
from
the
pole
towards
the
equator.

 Over
time
as
they
carry
sediment
towards
the
equator,
the
angular
speed
of
the
earth
will

(
increase
|
 decrease
|
not
change
)
. d)

The
magnitude
of
the
force
will
be
greatest
where
the
graph
of
the
potential
energy
is
 (
maximum
|
|
steepest
|
0
|
minimum
|
none
of
the
above
) e)
In
one
dimension
the
work
done
by
a
force
is
the
area
under
the
curve
of
the
force
versus
(
time
|
 position
|
all
of
the
above
|
none
of
the
above
)
curve....
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final_11 - Phy9A-C Page 1 of 2 Cole-UCDavis Physics 9A-C...

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