Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
If - = and A " B = C, then the vectors and are oriented perpendicular
relative to one other.
A 2-L bottle of soda gives you more for your money than a 2-qt bottle would, at the
same price.
Electric potential decreases when moving farther from positive charges or nearer to
negative charges.
The projection of circular motion onto a straight line is simple harmonic motion.
A convex lens is known as a diverging lens and a concave lens is known as a
converging lens.
Einstein's theory of general relativity applies to gravitation.
If two or more sources of light are to show interference patterns, they must be coherent.
The interference pattern observed in Newton's rings experiment is because of the path
difference between the top surface and the bottom surface of the air between the pieces
of glass.
The volume of a given amount of gas is inversely proportional to the absolute
temperature when the pressure is kept constant.
It is possible to have constant speed, but still be accelerating.
In the two-slit experiment, for the condition of dark fringes, the value of m = +2
corresponds to a path difference of 3λ/2.
An object thrown downward does not experience free fall.
In the two-slit experiment, for the condition of bright fringes, the value of m = +2
corresponds to a path difference of λ.
Magnetic field lines come out of the south pole of a magnet and enter at the north pole.
The resistivity of the material of a wire is inversely proportional to the resistance of the
wire.
A concave mirror always produces a real image of an object placed in front of it.
Conductive heat transfer can only occur if solids mediate the energy transfer.
The Coulomb force between two charges can be attractive or repulsive.
In a compound microscope the final image is virtual.
Momentum is conserved during a completely inelastic collision.
Problems involving a non-conservative force cannot be solved because there is no
definable potential energy.
A component of a vector can be greater than the vector's magnitude.
In kinetic theory, a gas is modeled as being made up of a large number of molecules
which bounce from the walls of the container.
According to Einstein's general theory of relativity, rotating reference frames cannot be
distinguished from gravitational acceleration.
The center of mass of an object must always be located where the physical material of
the object is located.
At any depth in a fluid at rest, the pressure is the same in all directions at the given
depth.
The period and frequency of a simple pendulum depend on the mass of the pendulum
bob.
The internal energy of an ideal gas does not depend on the volume.
The distribution of energy in the blackbody radiation depends upon the material from
which the blackbody is constructed.
In a series LRC circuit an inductor will be dominant at higher frequencies.
The magnetic field near a current carrying wire is directly proportional to the distance
from the wire.
When the speed of a wave depends on the wavelength (or frequency), the waves are
said to exhibit diffraction.
An object completely submerged in water must either rise or fall.
If the Q-value is less than zero for a nuclear reaction, the reaction is
A) exoergic
B) endoergic
C) endothermic
D) exdoergic
E) not possible
In the Bohr theory the orbital radius depends upon the principal quantum number in
what way?
A) n
B) 1/n
C) n2
D) 1/n2
E) n3
How many joules of energy are required to accelerate one kilogram of mass from rest to
a velocity of 0.886c?
A) 1.8 x 1017 J
B) 9.0 x 1016 J
C) 3.0 x 103 J
D) 8.1 x 1021
E) 3.4 x 10-7
What is the nuclear radius of 90Sr?
A) 4.0 x 10-15 m
B) 1.2 x 10-15 m
C) 1.1 x 10-13 m
D) 5.4 x 10-15 m
E) 3.3 x 10-13 m
Which of the following is not a unit of work?
A) Kg-m/s
B) J
C) Kw-h
D) N-m
E) W-s
The grand unified theory (GUT) is a sought-after model that would unify three of the
four forces of nature. Which force is the one it would not include?
A) gravitational
B) strong
C) weak
D) electromagnetic
A 0.10 μF capacitor is connected to a 120. volt rms 60. Hz source.
(a) What is the capacitive reactance?
(b) What is the rms current to the capacitor?
(c) If both the capacitance and the frequency doubled, what would be the current?
A satellite encircles Mars at a distance above its surface equal to 3 times the radius of
Mars. The acceleration of gravity at the satellite, as compared to the acceleration of
gravity on the surface of Mars, is
A) one-ninth as much.
B) zero.
C) the same.
D) one-third as much.
E) one-sixteenth as much.
Earth observes a rocket move away at 0.370c. The rocket is designed to launch a
projectile at 0.505c relative to the rocket.
(a) Fired straight ahead, what is the projectile speed observed from Earth?
(b) Launched to the rear, what is the projectile speed observed from Earth?
When the first law of thermodynamics, Q = Δu + W, is applied to an ideal gas that is
taken through an adiabatic process,
A) Δu = 0.
B) W = 0.
C) Q = 0.
D) it is not true that Δu = 0 or W = 0 or Q = 0.
Consider two diffraction gratings with the same slit separation, the only difference
being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated
with a beam of the same monochromatic light
A) the grating with 3 slits produces the greater separation between orders.
B) the grating with 4 slits produces the greater separation between orders.
C) both gratings produce the same separation between orders.
D) both gratings produce the same separation between orders, but the orders are better
defined with the 4-slit grating.
Inductive Reactance is actually a consequence of
A) Gauss's Law.
B) Coulomb's Law.
C) Faraday's Law.
D) Newton's Law.
A typical public utility (power company) supplies electricity at an approximate cost of
A) 10./kW ∙ h.
B) $10./kW ∙ h.
C) 1./kW ∙ h.
D) $1./kW ∙ h.
E) $100./kW ∙ h.
A boy jumps at a speed of 20.0 m/s at an angle of 25.0 above the horizontal. What is the
horizontal component of the boy's velocity?
A) 18.1 m/s
B) 15.6 m/s
C) 8.5 m/s
D) 12.6 m/s
E) 20.0 m/s
(Refer to Fig. 2-4.) At t = 1 s
A) C has a greater velocity than D.
B) D has a greater velocity than C.
C) C and D have the same velocity.
D) C is accelerating.
E) D is accelerating.
A ball is released moving straight up at 15. m/s. At some time later it is falling
downward at 15. m/s. What was the magnitude of its average velocity over this time
period?
A) 0. m/s
B) 30. m/s
C) 15. m/s
D) 7.5 m/s
E) 22. m/s
An ideal gas is compressed isothermally from 30 L to 20 L. During this process, 6 J of
energy is expended by the external mechanism that compressed the gas. What is the
change of internal energy for this gas?
A) +6 J
B) zero
C) -6 J
D) +12 J
E) -12 J
FIGURE 18-12
Examine the circuit shown in Fig. 18-12.
(a) Determine the current in each resistor.
(b) Determine the potential difference between points A and B.
If you connect two identical storage batteries together in parallel, and place them in a
circuit, the combination will provide
A) twice the voltage and twice the total charge that one battery would.
B) twice the voltage and the same total charge that one battery would.
C) the same voltage and twice the total charge that one battery would.
D) half the voltage and half the total charge that one battery would.
E) half the voltage and twice the total charge that one battery would.
Due to the unusual thermal expansion properties of water, when a lake freezes during
the winter, the water at the bottom of the lake is at ________ temperature than the water
above it.
A) the same
B) a higher
C) a lower
An object is placed 3 cm from a convex mirror of radius 4 cm.
(a) Graphically determine the size and position of the image.
(b) Is the image real or virtual?
For certain angles, TOTAL INTERNAL REFLECTION can occur when light tries to
pass from one medium to another which has
A) a larger index of refraction.
B) a smaller index of refraction.
C) the same index of refraction.
D) an index of refraction which is sin-1 (45).
E) an index of refraction which is sin-1 (n).
Which of the following is the smallest unit of heat energy?
A) Btu
B) calorie
C) kilocalorie
D) Joule
241Am decays by alpha particle emission. The daughter isotope in this case is (the
atomic numbers of Np, Pu, Am, Cm, and Bk are 91, 92, 93, 94, and 95 respectively)
A) 239Np.
B) 237Np.
C) 245Bk.
D) 235Bk.
E) not given.
Suppose that an 80. kg person walking on crutches supports all his weight on the two
crutch tips, each of which is circular with a diameter of 1.0 inch. What pressure is
exerted on the floor? Express the answer in psi.
A) 1.1 x 102 psi
B) 14. psi
C) 1.4 x 102 psi
D) 56 psi
E) 2.2 x 102 psi
Fig. 15.5 shows four Gaussian surfaces surrounding a distribution of charges. Which
Gaussian surfaces have no electric flux through them?
A) a.
B) b.
C) c.
D) b and d.
E) b and c.
FIGURE 4-2
A 16-kg fish is weighed with two spring scales, each of negligible weight, as shown in
Fig. 4-2. What will be the readings on the scales?
A) The bottom scale will read 16 kg, and the top scale will read zero.
B) The sum of the two readings will be 32 kg.
C) The top scale will read 16 kg, and the bottom scale will read zero.
D) Each scale will show a reading greater than zero and less than 16 kg, but the sum of
the two readings will be 16 kg.
E) Each scale will read 8 kg.
Vector = 4.00 m points eastward and vector = 3.00 m points northward. The
resultant vector + is given by
A) 5.00 m at an angle 71.6 north of east.
B) 5.00 m at an angle 36.9 north of east.
C) 5.00 m at an angle 53.1 north of east.
D) 5.00 m at an angle 18.4 north of east.
E) 5.00 m at an angle 26.6 north of east.
See Fig. 6-1. After leaving the platform, the diver's momentum will be least at which
point?
A) A
B) B
C) C
D) D
FIGURE 2-4
(Refer to Fig. 2-4.) At t = 0 s
A) rider D is ahead of rider C.
B) rider C is ahead of rider D.
C) riders C and D are at the same position.
D) rider D is moving faster than rider C.
E) rider D is moving slower than rider C.
Being the ideal engine, the maximum COP of a Carnot cycle operated in reverse as a
refrigerator is
A) (Th/Tc)(1 " Tc/Th)-1.
B) 100.
C) (1 " Tc/Th)-1.
D) (Tc/Th) ∙ (1 " Tc/Th)-1.
The earth's magnetic field at the magnetic equator is approximately
A) 104T.
B) 1/2 T.
C) 10-5 T.
D) 10-3 T.
E) 104 Gauss.
A beam of light travels a distance of 2900 m. How much time does it take?
A) 9.7 s
B) 9.7 ms
C) 9.7 μs
D) 9.7 ns
E) 9.7 ps
Do like magnetic poles repel or attract?
An electron traveling due North with speed 4 105 m/s enters a region where the earth's
magnetic field has the magnitude 5 10-5 T and is directed downward at 45 below
horizontal. What magnitude force acts on the electron?
A car traveling 60 km/h accelerates at the rate of 4.0 m/s2. How much time is required
for the car to reach a speed of 90 km/h?
Describe the differences between secular and diffuse reflection.
Fig. 2-5 represents the velocity of a particle as it travels along the x-axis. In what
direction is the acceleration at t = 3.0 s?
A spaceship visits Alpha Centauri and returns to Earth. Alpha Centauri is 4.5 light-years
from Earth (our second closest star). If the spaceship travels at one-half the speed of
light for essentially all of its expedition, how long was the ship gone according to an
observer on the Earth?
A nearsighted man wears -3.00 D lenses. With these lenses, his corrected near point is
25.0 cm. What is his uncorrected near point?
Express the result of the following calculation, to the proper number of significant
figures: 50.19 " 7966 x 10-3
Heat is added to an ideal gas at 20.°C. If the internal energy of the gas increases by a
factor of three during this process, what is the final temperature?
Holly intends to swim to a point straight across a 100. m wide river that flows at 1.2
m/s. If she can swim 2.5 m/s in still water, at what angle must she swim upstream to
achieve her goal?
Find the Q value of the following reaction:
N + He → O + H
(14.003074 u) (4.002603 u) (16.999131 u) (1.007825 u)
State the law of conservation of total energy.
Discuss what makes the Schrdinger wave function so non-classical.
Consider an aluminum rod encircling the Earth (radius 6378. km). If the linear thermal
expansion coefficient of the aluminum is 24. x 10-6 (C°)-1, and if the temperature of the
rod increases by 1.0 C, how high off the ground would the expanded ring be (assuming
uniform space all around)?
Determine the missing product X in the reaction: n + U → X + 2( e)
Explain the process through which kinetic energy is conserved in an elastic collision.
After being charged from a battery, the plates of a parallel plate capacitor are moved
closer together. When they are half as far apart as originally, by how much does the
stored energy change?
