Physics 1C Spring 2014: Practice Final
Version A
1
Closed book. No work needs to be shown for multiple-choice questions. Choose the closest
answer.
1) While conducting an experiment in 1CL you note that a simple pendulum has a period of
2.0 seconds. The bob at the end of the pendulum has a mass of 0.33 kg. What is the length of
the pendulum?
a.
b.
c.
d.
e.
0.36 meters.
0.78 meters.
0.99 meters.
2.4 meters.
3.3 meters.
2) A contact lense is in the shape of a convex meniscus. The inner surface is shaped to fit the eye.
It has a curvature of 7.8mm. The lens is made out of plastic with index of refraction n=1.56. The
lens has focal length of 44.4cm. What is the curvature radius of the outer surface of the lense?
a) 7.16mm b) 7.32mm c) 7.56mm d) 7.75mm e) 8.02mm
3) An atom is in a state with orbital quantum number l = 2. Possible values of the magnetic
quantum number ml are:
a.
b.
c.
d.
e.
only 1 and 2.
only 0, 1, and 2.
only 0 and 1.
only –1, 0, and 1.
only –2, –1, 0, 1, and 2.
4) A drug tagged with 9943Tc is prepared for a patient. Technetium ( 9943Tc ) has a half-life of
6.05 hr. If the original activity of the sample was 1.1x104 Bq, what is the activity after it has
sat on the shelf for 2.0 hr.?
a.
b.
c.
d.
e.
06.9.14
3
3.7x10
Bq.
€
3
8.1x10 Bq.
5.5x103 Bq.
1.3x103 Bq.
8.7x103 Bq.
€
Physics 1C Spring 2014: Practice Final
Version A
2
5) An oil film (noil = 1.30) floating on an experimental unknown fluid (nunknown = 1.25) is
illuminated by white light at normal incidence. The film is 125 nm thick. Find the longest
wavelength of light in the visible spectrum that is most strongly reflected. Assume the light
enters normal to the plane of oil (i.e. straight down in the picture).
a.
b.
c.
d.
e.
217 nm.
433 nm.
325 nm.
650 nm.
541 nm.
6) A piano tuner using a 264 Hz tuning fork hears 2 beats per second while playing the tuning
fork and a piano key at the same time. What are the two possible frequencies of vibration of the
piano wire?
a.
b.
c.
d.
e.
260 Hz and 268 Hz.
264 Hz and 268 Hz.
262 Hz and 268 Hz.
262 Hz and 266 Hz.
260 Hz and 262 Hz.
7) The Stern-Gerlach experiment makes use of:
a.
b.
c.
d.
e.
a strong uniform magnetic field.
a strong non-uniform magnetic field.
a strong uniform electric field.
a strong non-uniform electric field.
a much stronger than normal gravitational field.
8) A ray of light in air is incident on the mid-point of a Lucite prism surface at an angle of 25.0º
with the normal. For the Lucite, n = 1.55, and the prism apex angle is 30.0º. What angle does
the ray make with respect to the normal as it enters the air on the far side of the Lucite prism?
a.
b.
c.
d.
e.
06.9.14
15.8º.
75.8º.
28.4º.
22.3º.
14.2º.
1) Assume density of the gas and amplitude of a sound wave therein stays the same but the
pressure in the gas quadruples. What happens to the intensity of the sound?
A) The intensity decreases by half.
Physics
Spring stays
2014:the
Practice
Version A
3
B) The1Cintensity
same. Final
Physics 2CA Quiz
4A
C) The intensity doubles.
D)
intensity
quadruples.
9) AnThe
object
is placed
400 mm to the left of a certain converging lens. The resulting image is
Name___________________________________
E) The
intensity
decreases
to aand
quarter
of what
three
times
the
size
of
the
object
projected
ontoitawas.
screen. To make the image now five times
Physics 2CA Quiz 4A
1)
the size of the object on the same screen, the object-lens distance, p, must be changed to (note that
image-lens
distance
q alsoa changes
in this A
process):
2) the
Helium
spectral
lines from
distant galaxy
are blue shifted with respect to the same lines
2)
Name___________________________________
MULTIPLE
CHOICE. Choose the one alternative that best completes the statement or answers the question.
coming from galaxy B. Which of the following statements is most accurate?
a. p = 360 mm.
Quiz 1 Version
AThe tank
area receeding
fromand
earth
equal
speeds.
1) AA)
water
is
filled
depth of 40m
theattank
bottom
is 10m above ground. What water
1)
b. two
p =galaxies
540
mm.to
B) Galaxy
A
is
further
away
from
earth
than
Galaxy
B.
MULTIPLEpressure
CHOICE.
Choose
the
one
alternative
that
best
completes
the
statement
or
answers
the
question.
is
present
in
a
hose
4cm
in
diameter
at
ground
level?
The
hose
it
attached
on
one
end
c. p = 600 mm.
C)
Galaxy
is the
moving
awaydensity
from earth
slower
Galaxy
B. meter.
to
the
bottom
of
tank.
of water
is than
1000kg
per
d. p Choose
=A720
mm.
MULTIPLE CHOICE.
the
oneThe
alternative that
best completes
the cubic
statement
or answers the question.
1) AA)
water
tank
is
filled
to
a
depth
of
40m
and
the
tank
bottom
is
10m
1)
D) 3e5
Galaxy
is
moving
away from earth faster than Galaxy B. above ground. What water
square
e. Npper
=A960
mm.meter.
is present
in a hosethe
4cm
in diameter
level?
The The
hosemass
it attached
on oneisend
1) pressure
ItB)
is necessary
to determine
specific
heat ofatanground
unknown
object.
of the object
9 N per square
meter.
to
the
bottom
of
the
tank.
The
density
of
water
is
1000kg
per
cubic
meter.
500
It N
isin
determined
experimentally
that it the
takesfinger
16.0 Jback
to raise
temperature
10.0 Kelvin.
C) g.
2e4
per
squareismeter.
3) "Vibrato"
a violin
produced by sliding
andthe
forth
along a vibrating
string.
3)
A)
3e5
N
per
square
meter.
Find
the
specific
heat
of
the
object.
10)
An
ocean
wave
is
created
with
a
frequency
of
1.25
Hz
with
waves
that
have
a
wavelength
of
D) The
crosson
sectional
area of
the tank
is needed
solve this
problem.
The
G-string
a particular
violin
measures
30cmto
between
bridge
and its far end and is
B)
93NJ/kg
per square
meter.
A)
*K
traveling
with
a speed
of 1.25 m/s. frequency
The frequency
is suddenly
doubled
to ("nut")
E)1.00
5e5meters
Nrigidly
per
square
meter
clamped
at both
points.
It's fundamental
is 197Hz.
How far
from the
C)
2e4
N per
square
meter.
B)
15J/kg
*
K
2.50
Hz,
how
does
this
affect
the
wavelength
and
wave
speed
for
the
ocean
waves?
end should a violinist place a finger so that the G-string plays the note A (440Hz)?
D)
cross* sectional
area of the tank is needed to solve this problem.
C) The
7 J/kg
K
A)
11cm
B) 13cm
15cm
D)
17cm
E) Consider
19cm
a. NThe
new
bediameter
2.00C)
meters
andwith
the wave
speed
will remain
1.25
m/s.
2) Consider
aper
tank
ofwavelength
water
withwill
24cm
filled
water
to
a height
of 70cm.
a
2)
E)
5e5
square
meter
D) 1 J/kg * K
b. The
new
be the
0.500
metersFind
and the wave
will the
remain
1.25
m/s.
very small
hole
at wavelength
height 20cmwill
from
bottom.
speedspeed
at which
water
exits
the
0.3J/kg
Kis going through gas at a Mach angle of 60 degrees. We double the pressure in
4) tank
AE)
shock
4)
c. wave
The* wavelength
will remain
1.00=meters
and the new wave speed will be 2.50 m/s.
through
the
hole. (Density
of water
1000kg/m^3)
2) Consider
a
tank
of
water
with
24cm
diameter
filled
with
water
to
a
height
of
70cm.
Consider
a
2)
the
gas
while
the
shock
wave
is
still
passing
through.
What's
the
mach
angle
after
the
pressure
d. The wavelength will remain 1.00 meters and the new wave speed will be 0.625 m/s.
A) 2m/s
small
hole
at height
20cm will
frombethe
bottom.
the
which
thewill
water
exits
the the
2) very
Assume
have
an
ice/water/steam
mixture
atFind
theand
triple
point.
What
happens
as
increase
increase?
e. you
The
new
wavelength
0.500
meters
thespeed
new at
wave
speed
beyou
2.50
m/s.
!"#
B)
3m/s
!"#$%&%'()*#+,%-%
tank
through
the hole.
(Density
of water = C)
1000kg/m^3)
pressure
constant
temperature?
A)
20atdegrees
B)
40 degrees
50 degrees
D) 60 degrees
E) 80 degrees
C) 2m/s
5m/s
A)
A) The volume decreases, but otherwise nothing happens.
11)
D)
7m/s
B)
B)3m/s
The steam
and iceisturns
into water.
./%
5) "Vibrato"
in aunless
violin
back and forth along a vibrating string.
5)
E)
can't tell
theproduced
diameterby
of sliding
the holethe
is finger
known.
C)
5m/s
C)
The
water
and
steam
turns
into
ice.
The G-string on a particular violin measures 30cm between bridge and its far end and is
8) Consider
a sound
waves
of the
same
wavelength in air and water. Which has the lower
8)
D)
3)'
D) 7m/s
The ice
and water
turns
into It's
steam.
clamped
rigidly
at both
points.
fundamental frequency is 197Hz. If the violinist executes
E) can't tellpressure
unless the
diameter
the hole is3m/s
known.
3) frequency?
Water
200
kPa
isofflowing
a pipe,
when it encounters
3)
vibratoatbya moving
a of
finger
0.50cm
to eitheratside
of through
the position
appropriate
for playingan
an A
A) Wave inwhere
air has
lower
frequency.
obstruction
the
pressure
drops
by
10%.
What
fraction
of
the
pipe's
area
is
3) (440Hz),
Assume you
increase
temperatureresults?
of a liquid at constant pressure slightly below the critical
what
range the
of frequencies
B)
Wave
in
water
has
lower
frequency.
obstructed?(density
of
water
=
1000kg/m^3)
3) Water
at a increase
pressurethe
of pressure
200 kPa
is
flowing
at 3m/spoint,
through
acool
pipe,
it back
encounters
an
3)
point,
then
above
the critical
thewhen
liquid
then
A) 400-500Hz
B) 424-457Hz
C) and
431-449Hz
D)down,
435-445Hz
C) They
have
thethe
same
frequency
that
theyWhat
havephase
theofsame
wavearea
length.
A)
50% the
B) return
60%
C)
70%
D)
80%
E) 90%
obstruction
where
pressure
drops
by 10%.
What
fraction
the
pipe's
is encountering?
decrease
pressure
to
to
the given
starting
point.
transitions
are
you
of water
= 1000kg/m^3)
6) obstructed?(density
The
of an ambulance
1662 on
Hzthe
when
ambulance is stationary. What frequency
6)
A) siren
First liquid
to gas,
then wails
gas
toatliquid
waythe
back.
4) 12)
A
pump
uses
a
piston
of
10cm
diameter
that
moves
at
a
speed
of
1cm/s.
What
is
the
fluid
4)
9)
The
sound
intensity
5
meter
from
a
source
is
10dB.
If
power
of
the
source
drops
by
a
factor
of
9)
A)
50%
B)
60%
C)
70%
D)
80%
E)
90%
B) you
First hear
liquid
to solid,
then solid to
on you
the way
back.
will
after
the ambulance
hasliquid
passed
while
traveling at 33.60m/s? The speed of
4)' 5,
velocity
in
a
tube
of
10mm
in
diameter?
Under'the'best'condiMons,'atmospheric'turbulence'limits'the'resoluMon''
what
is liquid
the the
new
intensity
in dB?
C)
Only
toprevailing
gas.
sound
under
conditions
is 342 m/s.
9)'$"#
A)
1cm/s
B)
10cm/s
C)
1m/s
D)
10m/s
E)
100m/s
4) Aof'groundObased'telescopes'to'about'1'arc'second'(1/3600'of'a'degree).'
pump
uses
a
piston
of
10cm
diameter that
speed of
is the
fluid
4)
A)
dB liquid to solid.
B) 2 dB
C)moves
3 dB atC)a 1579Hz
D)1cm/s.
4 dB WhatD)
E)
5 dB
D) 11745Hz
Only
A)
B) 1843Hz
1514Hz
velocity
a tubetoofgas,
10mm
diameter?
E) Firstinliquid
theningas
to solid.
For'what'aperture'sizes'is'this'limitaMon'more'severe'than'that'of''
5)
Water
is
pumped
out
of
a
well
at 2.0m/s
through
a 9.0cm
hose. The
well
is 30.0
feet
5)
A)
1cm/s
B)
10cm/s
D)
10m/s
E) 100m/s
10)
A
1 organ
meter pipe
stringopen
is clamped
at both
ends.C)
the
first
higherdiameter
mode
standing
frequency
in the
7)
An
at
one
end
is tuned
toIfa1m/s
given
fundamental
frequency.
A
second
pipe
with 7)10)
0/% deep.
What
power
is needed
by the
pump?(Density of water = 1000kg/m^3)
diffracMon'at'550nm'?'
is 300Hz,
what
is
the wave
speed?
both
ends
open
aafundamental
frequency
as large.
What isa the
ratio
of of
theicelength
4) string
How long
will
it has
take
500W
microwave
oven totwice
vaporize
completely
100g
block
that isof
5)'
A)
0.1kW
5) Water
is
pumped
out
of
a
well
at
2.0m/s
through
am/s
9.0cm diameter
hose.
The well is E)
30.0
feet
'the
A)
50
m/s
B)
100
m/s
C)
150
D)
300
m/s
450
m/s 5)
first at
pipe
the second
pipe?
initially
zerotodegree
Celsius?
(Lf = 334 kJ/kg; cw = 4.184 kJ/(kg*K), Lv = 2257 kJ/kg)
B) 0.3kW
deep.
What power is needed by the pump?(Density of water = 1000kg/m^3)
A)
B) 1 B) 10 min
C) 2
E) 0.24
A)'10cm''''''B)'1m'''''C)'5m''''D)'10m''''E)'50m'
A) 41 min
C) 1 hour D) 0.5
D) 10 hours
A)
0.1kW
C) 1kW
B) 0.3kW
D)
3kW
5) An aerosol of whipped cream is pressurized at 440 kPa when it’s refrigerated at 3 degree Celsius. The can
C)
E) 1kW
Area of well is needed to calculate the power.
warns against temperatures in excess of 50 degree Celsius. What is the maximum safe pressure for the can?
D) 3kW
A) 500 kPa
6)' White'light'shines'on'a'250'nm'thick'layer'of'diamond'(n=2.42)'straight'down.''
E) Area of well is needed to calculate the power.
6) How
much
6)
B) 600
kPa would a lead brick of dimensions 2.0in x 2.0in x 5.0 in weigh if placed in oil with
Which'of'the'following'wavelengths'of'light'is'most'strongly'reflected?'
density
0.92
C) 1000
kPag/cm^3 ? (Density of lead = 11.4 g/cm^3)
1
a)'450nm''''b)'480nm'''c)'520nm'''d)'550nm''e)'600nm''
6) How
much
would
a
lead
brick
of
dimensions
2.0in
in weigh
oil4.5kg
with
6)
D) 0.2kg
4000 kPa
A)
B) 0.3kg
C) 3.5kgx 2.0in x 5.0 D)
4.0kg if placed inE)
density
0.92
E) 7000
kPag/cm^3 ? (Density of lead = 11.4 g/cm^3)
7'kg/s'.'
A)
0.2kg
0.3kg a pipe with
C)an
3.5kg
D)of4.0kg
E) 4.5kg
A'typical'mass'flow'rate'for'the'Mississippi'River'is'1.8x10
Water enters a houseB)
through
inside diameter
2cm at an
absolute
pressure of
7)
10)' 7) 06.9.14
400
kPa.
A
1cm
diameter
pipe
leads
from
the
ground
floor
(where
the
water
piping
enters
the
6)What'is'the'flow'speed'in'a'region'where'the'river'is'2.0'km'wide'and'6.1m'deep?'
What happens to the volume of a balloon if you put it in the freezer?
7) Water
enters
house through
a pipe with
an
inside
diameter
of 2cm
at an absolute
house)
to theasecond
floor bathroom,
above.
When
the flow
speed
the 2cm pressure
diameterofinlet 7)
A) It increases.
B) It5m
does
not change.
C) It at
decreases.
'
Physics 1C Spring 2014: Practice Final
Version A
4
13) If an electron has a measured deBroglie wavelength of 0.850x10–10m, what is its kinetic
energy?
a.
b.
c.
d.
e.
55.0 eV.
104 eV.
147 eV.
207 eV.
18.8 eV.
14) What particle is emitted when
a.
b.
c.
d.
e.
240
94
Pu decays to
alpha.
beta (electron).
beta (positron).
€
gamma.
quark.
236
92
U?
€
15) An X-ray of energy 75.0 keV strikes an electron initially at rest. The X-ray is scattered
through an angle of 75.0o compared to the incident direction. What is the new wavelength of
the X-ray after scattering?
a.
b.
c.
d.
e.
1.83 x 10–11 m.
1.48 x 10–11 m.
1.66 x 10–11 m.
1.80 x 10–12 m.
1.96 x 10–11 m.
16) What is the binding energy per nucleon of
196.966543 u.
a.
b.
c.
d.
e.
1.9 MeV.
7.3 MeV.
7.6 MeV.
7.9 MeV.
8.3 MeV.
197
79
Au ? The atomic mass of
€
17) If the length of a simple pendulum is doubled, its period will:
a.
b.
c.
d.
e.
06.9.14
halve.
increase by a factor of 2 .
decrease by a factor of 2 .
double.
remain the same.
€
€
€
197
79
Au is
Physics 1C Spring 2014: Practice Final
Version A
Physics 1C Spring 2011: Final Exam Make-Up
5
3
18)
8. A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned
spring with a spring constant of 40 N/m. The block is initially displaced 4.0 cm from the
equilibrium point and then released to set up a simple harmonic motion. What is the speed of
the block when it passes through the equilibrium point?
a.
b.
c.
d.
e.
2.1 m/s.
1.6 m/s.
1.1 m/s.
0.57 m/s.
0.32 m/s.
19) A railroad train is travelling at 30m/s in still air. The frequency of the note emitted by the train
262Hz.
frequency
is heard
a passenger
on a train
moving
in the opposite
9. whistle
Which is
one
of theWhat
following
properties
of aby
wave
can be changed
without
changing
any of the
direction
others? towards the train at 18m/s with respect to the ground?
a) 275Hz b) 300Hz c) 325Hz d) 350 Hz e) 375Hz
a. wavelength.
b. speed.
20) Oxygen-15
is a radioactive isotope with a 2 minute half-life. Approximately how long will it
c. amplitude.
take d.
for frequency.
99.9% of a sample of Oxygen-15 to decay?
e. All of the above choices are correct.
a) 20minutes b) 2 hours c) 8 hours d) 2 days e) 10 minutes
215
10. Radioactive 215
83 Bi decays into 84 Po . Which of the following particles is released in the
decay?
Answer Key:
a. aCproton.
1)
b. an
2)
C alpha particle.
c. an
3)
E electron.
d.
a
4) Epositron.
e. aDneutron.
5)
6) D
11. An7)
object
B is 30 cm in front of a converging lens of focal length 10 cm. The image is:
8)
D and larger than the object.
a. real
9) A
b. real and the smaller than the object.
10) B
c. virtual and smaller than the object.
11)
d. B
real and the same size as the object.
12)
e. A
virtual and larger than the object.
13) D
14) A
12. X-rays of wavelength of 0.0650 nm undergo Compton scattering from free electrons in
15) A
carbon. What is the wavelength of photons scattered at 90.0° relative to the incident beam?
16) D
17)
a. B
0.0024 nm.
18)
b. D
0.0674 nm.
19)
B
c. 0.0687 nm.
20)
d. A
0.0626 nm.
e. 0.158 nm.
06.9.14
06.03.11