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Which of the following operations will not change a vector?
A) Translate it parallel to itself.
B) Rotate it.
C) Multiply it by a constant factor.
D) Add a constant vector to it.
E) Subtract a constant vector from it.
A charge q = 3 x 10-6 C of mass m = 2 x 10-6 kg, and speed v = 5 x 106 m/s enters a
uniform magnetic field. The mass experiences an acceleration a = 3 x 104 m/s2. What is
the minimum magnetic field that would produce such an acceleration?
A) 0.1 T
B) 0.004 T
C) 0.001 T
D) 0.01 T
E) 0.04 T
The energy required to ionize a hydrogen atom from the ground state is
A) 27.2 eV.
B) 13.6 eV.
C) 6.8 eV.
D) 3.4 eV.
E) infinite.
Six pounds on Earth has what weight on the moon?
A) 1. kg
B) 6. lb
C) 36. lb
D) 1. lb
E) 1/6 lb
What is the velocity of propagation if a wave has a frequency of 12. Hz and a
wavelength of 3.0 m?
A) 4.0 m/s
B) 6.0 m/s
C) 0.25 m/s
D) 28 m/s
E) 36 m/s
A 0.10 kg piece of copper, initially at 95°C, is dropped into 0.20 kg of water contained
in a 0.28-kg aluminum can; the water and aluminum are initially at 15°C. What is the
final temperature of the system?
A) 19.2°C
B) 7.89°C
C) 18.3°C
D) 17.8°C
E) 23.7°C
You are trying to cross a river that flows due south with a strong current. You start out
in your motorboat on the east bank desiring to reach the west bank directly west from
your starting point. You should head your motorboat
A) due west.
B) due north.
C) due south.
D) in a southwesterly direction.
E) in a northwesterly direction.
A trombone or a trumpet can be considered a(n)
A) open organ pipe.
B) closed organ pipe.
What is the momentum in kg∙m/s of a proton when it is moving with a speed of 0.60c?
A) 1.2 x 10-19 kg∙m/s
B) 1.3 x 10-19 kg∙m/s
C) 1.5 x 10-19 kg∙m/s
D) 3.0 x 10-19 kg∙m/s
E) 3.8 x 10-19 kg∙m/s
Is it possible for a system to have negative potential energy?
A) Yes, as long as the total energy is positive.
B) Yes, as long as the total energy is negative.
C) Yes, since the choice of the zero of potential energy is arbitrary.
D) No, because this would have no physical meaning.
E) No, because the kinetic energy of a system must equal its potential energy.
FIGURE 16-1
Fig. 16-1 shows three capacitors connected to a battery. The capacitances are such that
C1 = 2C2 and C1 = 3C3. Which capacitor stores the smallest amount of charge?
A) C2
B) C3
C) C1
D) C2 or C3
E) All three capacitors store the same amount of charge.
Which of the following materials has the slowest speed of light?
A) water
B) oil
C) air
D) flint glass
E) diamond
A mass is attached to a spring of spring constant 60 N/m along a horizontal, frictionless
surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It
takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What
is the frequency of oscillation?
A) 0.50 Hz
B) 1.0 Hz
C) 1.5 Hz
D) 2.0 Hz
E) 2.5 Hz
Two children are riding on a merry-go-round. Child A is at a greater distance from the
axis of rotation than child B. Which child has the larger tangential speed?
A) Child A
B) Child B
C) They have the same zero tangential speed.
D) They have the same non-zero tangential speed.
E) There is not enough information given to answer the question.
The reason the wavelike nature of a moving baseball is not noticed in everyday life is
that
A) it doesn't have a wavelike nature.
B) its wavelength is too small.
C) its frequency is too small.
D) its energy is too small.
E) its speed is too small.
10. mL is equal to
A) 0.01 L
B) 1.0 kL
C) 0.10 L
D) 10-6L
E) 0.001 ML
There is a limit to the size of a stable nucleus because of
A) the short range nature of the strong nuclear force.
B) the weakness of the gravitational force.
C) the weakness of the electrostatic force.
D) the limit range of the gravitational force.
When a light beach ball rolling with a speed of 6 m/s collides with a heavy exercise ball
at rest, the beach ball's speed after the collision will be approximately
A) 3 m/s.
B) 12 m/s.
C) 6 m/s.
D) 18 m/s.
E) 0.
A marble moving 1.48 m/s rolls off the top edge of a 125. cm high table.
(a) How far from the base of the table did it strike the floor?
(b) How long was it "in flight"?
Consider two vectors and in Fig. 3-3. The difference - is
A) choice (a).
B) choice (b).
C) choice (c).
D) choice (d).
A butterfly moves with a speed of v = 12.0 m/s. The x-component of its velocity is 8.00
m/s. The angle between the direction of its motion and the x-axis must be
A) 60.0
B) 41.8
C) 48.2
D) 30.0
E) 53.0
A temperature change of 20°C corresponds to a temperature change of
A) 68. F°.
B) 11.1 F°.
C) 36. F°.
D) 42. F°.
E) 20. F°.
Capacitance is o A/d for
A) all capacitors.
B) parallel wires.
C) parallel plates.
D) concentric cylinders.
A photon has an energy of 6.60 eV. To what wavelength does this energy correspond?
A) 100 nm
B) 118 nm
C) 151 nm
D) 173 nm
E) 189 nm
If the theoretical efficiency of a Carnot engine is to be 100%, the heat sink must be
A) at 0°C.
B) at absolute zero.
C) at 100°C.
D) infinitely hot.
E) a perfect radiator.
Two 4. Ω resistors are connected in parallel, and this combination is connected in series
with 3 Ω. What is the effective resistance of this combination?
A) 11. Ω
B) 5. Ω
C) 7. Ω
D) 1.2 Ω
E) 4. Ω
The heat required to change a substance from the solid to the liquid state is referred to
as the
A) heat of fusion.
B) heat of vaporization.
C) heat of melting.
D) heat of freezing.
In the ground state, the quantum numbers (n, ℓ, m , ms) for hydrogen are, respectively,
A) 1, 1, 1, 1.
B) 1, 0, 0, 0.
C) 1, 0, 0, 1/2.
D) 1, 1, 1, 1/2.
E) 1, 1, 0, 1/2.
A car approaches you at a constant speed, sounding its horn, and you hear a frequency
of 76 Hz. After the car goes by, you hear a frequency of 65 Hz. What is the frequency of
the sound emitted by the horn? The speed of sound in air is 343 m/s.
A) 68 Hz
B) 69 Hz
C) 70 Hz
D) 71 Hz
E) 72 Hz
The secondary coil of a neon sign transformer provides 7500. V at 0.010 A. The
primary coil operates on 120. V. What current does the primary draw?
A) 0.625 A
B) 1.66 A
C) 333. mA
D) 6.25 10-4 A
E) 0.16 A
If the ac peak voltage across a 100-ohm resistor is 120 V, then the average power
dissipated by the resistor is
A) 102 W.
B) 288 W.
C) 72 W.
D) 144 W.
E) 220 W.
A wire carrying a 2-A current is placed at an angle of 60 with the respect to a magnetic
field of strength 0.2 T. If the length of the wire is 0.6 m what is the magnitude of the
magnetic force acting on the wire?
A) 0.4 N
B) 0.2 N
C) 0.6 N
D) 0.8 N
E) 1.0 N
A 2.0 meter long Aluminum wire (R = 0.44 mΩ, ρ = 2.82 x 10-8 Ω-m, α = 4.29 x 10-3
C-1) is connected in series to an 8.0 meter long Tungsten wire (R = 0.20 mΩ, ρ = 5.6 x
10-8 Ω-m, α = 4.5 x 10-3 C-1). What is the resistance of the combination if the wire is
heated to 150.°C? Assume the initial temperature for both wires is room temperature
(20°C).
A) 0.78 mΩ
B) 0.88 mΩ
C) 0.69 mΩ
D) 1.00 mΩ
E) 0.64 mΩ
An incompressible fluid flows at 0.252 m/s through a 44. mm diameter (circular cross
section) pipe. The pipe widens to a square cross sectional area 5.5 cm on a side.
Assuming steady flow:
(a) what is the speed through the "square" section?
(b) what is the flow rate in liters/minute?
Sound traveling in air at 23.°C enters a cold front where the air temperature is 2.°C. If
the sound frequency is 1500. Hz, determine the speed in the warmer air and in the
colder air.
State Kirchhoff's junction theorem.
A hyperopic eye can focus on objects which are 75. cm and farther. What POWER and
what FOCAL LENGTH spectacles should be prescribed so it can see objects 25. cm
and farther from the eye? (Assume negligible distance between spectacles and eye.)
A light ray strikes a glass plate of thickness 0.80 cm at an angle of incidence of 60. The
index of refraction of the glass is 1.55. By how much is the beam displaced from its
original line of travel after it has passed through the glass?
State the Principle of Equivalence.
What is the maximum theoretical efficiency possible for an engine operating between
and 400°C?
A laser beam strikes a plane reflecting surface with an angle of incidence of 37. What is
the angle between the incident ray and the reflected ray?
Name the four known fundamental forces in nature.
Neglecting the effect of air friction, at what angle should a cannon be raised to achieve
the greatest HEIGHT?
If the energy of a particle in a box in the ground state is E, what is the energy in the
state n = 4?
If the threshold wavelength to dislodge electrons from a metal is 373. nm, what is the
work function?
A container of an ideal gas at 1 atm is compressed to one-third its volume, with the
temperature held constant. What is its final pressure?
The critical angle is given by sinc (1/n1) for what condition?
The monthly (30 days) electric bill included the cost of running a central
air-conditioning unit for 2 hr/day at 5000. W, and a series connection of ten 60. W
lightbulbs for 5 hr/day. How much did these items contribute to the cost of the monthly
electric bill if electricity costs 8 per kW-h?
What is the ionization energy for a doubly ionized lithium ion (Z = 3)?
What POWER lens placed next to a lens of 25. cm focal length would produce a
combination with an effective INFINITE focal length?
