Consider two neighboring rectangular houses built from the same materials. One of the
houses has twice the length, width, and height of the other. Under identical climatic
conditions, what would be true about the rate that heat would have to be supplied to
maintain the same inside temperature on a cold day? Compared to the small house, the
larger house would need heat supplied at
A) twice the rate.
B) 4 times the rate.
C) 16 times the rate.
D) 6 times the rate.
E) 8 times the rate.
The total distance traveled by an object in one complete cycle of Simple Harmonic
Motion is ________ times the amplitude.
A) two
B) three
C) half
D) one
E) four
My flashlight beam makes an angle of 60. degrees with the surface of the water before
it enters the water. In the water what angle does the beam make with the surface?
A) 0
B) 30
C) 60
D) 22
E) 68
If a 2.0-MeV neutron released in a fission reaction loses half its energy in each
moderator collision, how many collisions are needed to bring it to (1/25) eV?
A) 6
B) 18
C) 26
D) 30
E) 4
Two point charges of magnitude 4.0 μC and -4.0 μC are situated along the x-axis at x1 =
2.0 m and x2 = -2.0 m, respectively. What is the electric potential at the origin of the
xy-coordinate system?
A) -36 x 103 V
B) 0 V
C) 36 x 103 V
D) -48 x 103 V
E) 48 x 103 V
A sample of a diatomic ideal gas occupies 33.6 L under standard conditions. How many
moles of gas are in the sample?
A) 3.0
B) 4.5
C) 1.5
D) 2.0
E) 0.75
For a projectile launched horizontally, the horizontal component of a projectile’s
velocity
A) is zero.
B) remains a non-zero constant.
C) continuously increases.
D) continuously decreases.
E) any of the above, depending on position.
Is it possible to see a virtual image?
A) no, since virtual images do not really exist
B) no, since the rays that seem to emanate from a virtual image do not in fact emanate
from the image
C) yes, since the rays that appear to emanate from a virtual image can be focused on the
retina just like those from an illuminated object
D) yes, since almost everything we see is virtual because most things do not themselves
give off light, but only reflect light coming from some other source
E) yes, but only indirectly in the sense that if the virtual image is formed on a sheet of
photographic film, one could later look at the picture formed
You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm.
(a) If you were to use any two of these lenses to build a telescope, what is the maximum
magnification you could achieve?
(b) If you were to use any two of these lenses to build a telescope, what is the lens
separation for the maximum magnification telescope?
An AC voltage source has an amplitude of 96. V and frequency 400. Hz. The voltage
was zero at t = 0 and was increasing.
(a) What is the effective rms voltage?
(b) What is the instantaneous voltage at 1.00 ms?
(c) When will the voltage be 40. V?
When an alpha particle is emitted from an unstable nucleus, the atomic mass number of
the nucleus
A) increases by 2.
B) decreases by 4.
C) stays unchanged.
D) increases by 4.
E) decreases by 2.
Give at least one example of each of the following:
(a) longitudinal standing wave.
(b) transverse standing wave.
At room temperature (20.C) the area of a hole in a sheet of material is 5.505 cm2. When
heated to 830.C the area increases by 29.0 mm2.
(a) What is the thermal coefficient of linear expansion for the material?
(b) If the temperature had decreased to -76. Fahrenheit, what would be the area of the
hole?
Substitute the correct prefix to the fun-word “10-cards”.
A) milli
B) deka
C) giga
D) pico
E) tera
A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle
with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of
0.18 N, what angle does the wire make with respect to the magnetic field?
A) 20
B) 25
C) 30
D) 35
E) 60
The part of an electron microscope that plays the same role as the lenses do in an
optical microscope is
A) the vacuum chamber.
B) the coils.
C) the cathode.
D) the deflector plates.
What power lens is needed to correct for farsightedness where the uncorrected near
point is 75 cm?
A) -2.67 D
B) +2.67 D
C) +5.33 D
D) -5.33 D
E) +1.00 D
If you stand in front of a concave mirror, exactly at its focal point,
A) you won’t see your image because there is none.
B) you will see your image, and you will appear smaller.
C) you will see your image at your same height.
D) you will see your image and you will appear larger.
E) you won’t see your image because it’s focused at a different distance.
What is the principal difference between a hydrogen bomb and a uranium bomb?
A) A uranium bomb is an atomic bomb, and a hydrogen bomb is a nuclear bomb.
B) A uranium bomb utilizes a fission reaction whereas a hydrogen bomb utilizes a
fusion reaction.
C) Both work on the same principle, but the hydrogen bomb has a higher yield.
D) A hydrogen bomb converts mass into energy, whereas a uranium bomb does not.
E) One results in radioactive fallout, and the other does not.
A battery charges a parallel-plate capacitor fully and then is removed. The plates are
immediately pulled apart. (With the battery disconnected, the amount of charge on the
plates remains constant.) What happens to the potential difference between the plates as
they are being separated?
A) It decreases.
B) It increases.
C) It remains constant.
D) There is no way to tell from the information given.
The thermal conductivity of concrete is 0.80 W/m-C and the thermal conductivity of
wood is 0.10 W/m-C. How thick would a solid concrete wall have to be in order to have
the same rate of flow through it as an 8.0 cm thick wall made of solid wood? (Assume
both walls have the same surface area.)
A 110-V hair dryer is rated at 1200 W. What current will it draw?
A) 0.090 A
B) 1.0 A
C) 5.0 A
D) 11 A
E) 12 A
Heisenberg’s Uncertainty Principle states that
A) all measurements are to some extent inaccurate, no matter how good the instrument
used.
B) we cannot in principle know simultaneously the position and momentum of a
particle with absolute certainty.
C) we can never be sure whether a particle is a wave or a particle.
D) at times an electron appears to be a particle and at other times it appears to be a
photon.
E) the charge on the electron can never be known with absolute accuracy.
The critical angle for glass in air if the glass has index of refraction 1.50 is
A) 41.8.
B) 85.9.
C) 56.3.
D) 90.
E) 48.1.
Water runs out of a horizontal drainpipe at the rate of 120. liters per minute. It falls 3.20
m to the ground. Assuming the water doesn’t splash up, what average force does it exert
on the ground?
A) 12.0 N
B) 19.6 N
C) 15.8 N
D) 8.88 N
E) 6.20 N
The coil of a generator has 50 loops and a cross-sectional area of 0.25 m2. What is the
maximum emf generated by this generator if it is spinning with an angular velocity of
4.0 rad/s in a 2.0 T magnetic field?
A) 100. V
B) 50. V
C) 400. V
D) 75. V
E) 0. V
When light enters a material of higher index of refraction, its speed
A) decreases.
B) first increases then decreases.
C) stays the same.
D) increases.
E) first decreases then increases.
FIGURE 4-1
See Fig. 4.1. If two identical masses are attached by a light cord passing over a
massless, frictionless pulley of an Atwood’s machine, but at different heights, and then
released, then
A) the motion will depend on the amount of the masses.
B) the higher mass will go down.
C) the masses will not move.
D) the lower mass will go down.
Using the Rayleigh Criterion for 400. nm light, what sized space telescope could have
1.0 km resolution of objects on Mars when viewed from above the Earth? (assume an
Earth-Mars close distance of 80. million km)
A) 3.9 m
B) 39. m
C) 3.9 km
D) 0.39 km
E) 39. km
The rear-view mirrors on the passenger side of many new cars have a warning written
on them: “OBJECTS IN MIRROR ARE CLOSER THAN THEY APPEAR.” This
implies that the mirror must be
A) concave.
B) plane.
C) convex.
D) transparent.
An irreversible engine operating between the temperatures of 550 K and 300 K extracts
1200 J of heat from the hot reservoir and produces 450 J of work. How much entropy is
created in the process?
A) 0.32 J/K
B) 0.68 J/K
C) 0.44 J/K
D) 0.73 J/K
E) 0 J/K
You obtain a 100. W lightbulb and a 50. W light bulb. Instead of connecting them in the
normal way, you devise a circuit that places them in series across normal household
voltage. Which statement is correct?
A) Both bulbs glow at the same increased brightness.
B) The 100-W bulb glows brighter than the 50-W bulb.
C) Both bulbs glow at the same reduced brightness.
D) The 50-W bulb glows more brightly than the 100-W bulb.
The mass of 1H is 1.007825 u and the mass of 1n is 1.008665 u. The mass of 12C is
12.000000 u, of 13N is 13.005739 u, and of 14N is 14.003074 u. What is the binding
energy of the last neutron in 14N?
A) 10.6 MeV
B) 9.8 MeV
C) 1.9 MeV
D) 2.5 MeV
E) 3.8 MeV
To produce an “A” note (440. Hz) at 20.°C, a saxophone must create how long an
effective air column?
A) 78. cm
B) 39. cm
C) 20. cm
D) 66. cm
E) 59. cm
An electron moving perpendicular to a magnetic field of 2.2 x 10-2 T moves in a circle
of certain radius. If the electron is moving with a speed of 1.5 x 107 m/s, what is the
radius of the circle?
A) 1.5 x 10-3 m
B) 2.2 x 10-4 m
C) 2.2 x 10-3 m
D) 3.9 x 10-4 m
E) 3.9 x 10-3 m