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An object is placed 6 cm from a concave mirror of radius 4 cm. Graphically determine:
(a) the image position.
(b) if the image is larger, smaller, or the same size as the object.
(c) if the image is real or virtual.
Boyle's law and Charles' law each respectively assume what is held constant?
A) temperature, volume
B) temperature, pressure
C) pressure, volume
D) volume, pressure
E) volume, temperature
If the Earth had four times its present mass, what would be its new period of revolution
around the sun, compared to its present orbital period?
A) two times as much
B) one-fourth as much
C) four times as much
D) one-half as much
E) the same
The speed of light in a certain medium is 2.2 x 108 m/s. What is the index of refraction
of this medium?
A) 1.0
B) 1.2
C) 1.4
D) 1.6
E) 1.8
The symbol for a certain isotope of strontium is Sr. What is the mass number of this
isotope?
A) 38
B) 52
C) 88
D) 90
E) 128
The speed for a "low" circular orbit about the Earth is about
A) 1.7 104 km/s.
B) 7.6 km/s.
C) 2.1 km/s.
D) 2.5 104 km/s.
E) 17. km/s.
A 15. μF capacitor is connected to a 50. V battery and becomes fully charged. The
battery is removed and a slab of dielectric that completely fills the space between the
plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the
capacitance of the capacitor after the slab is inserted?
A) 75. μF
B) 20. μF
C) 3.0 μF
D) 45. μF
E) 95. μF
A 8.0 μF capacitor is connected in series with a 6.0 kΩ resistor across a 20-V DC
source and a switch. What is the time constant of this RC circuit?
A) 9.0 ms
B) 12 ms
C) 40 ms
D) 18 ms
E) 48 ms
Johnny throws a shotput at an angle of 45. and it travels a horizontal distance of 30.
meters. If he releases the shotput at the same speed but changes the angle to 55., what
will be the new range (distance)?
A) 25. m
B) 28. m
C) 41. m
D) 32. m
E) 37. m
The binding energy of most nuclei is proportional to
A) Z2.
B) A.
C) A3.
D) A2.
E) .
The third SHELL has how many sub-shells?
A) 2
B) 6
C) 4
D) 3
E) 5
Compared to "Special" Relativity, "General" Relativity is more concerned with
A) gravitation.
B) mass-energy.
C) Unified fields.
D) Lorentz transformations.
E) electromagnetic fields.
A proton (being 1836 times heavier than an electron) gains how much energy when
moving through a potential increase of one volt?
A) 1836. eV
B) 1. eV
C) 0 eV
D) 1. Joule
E) 1836. J
A block lies on a horizontal frictionless surface. A horizontal force of 100 N is applied
to the block giving rise to an acceleration of 3 m/s2.
(a) Determine the mass of the block.
(b) Calculate the distance the block will travel is the force is applied for 10 s.
(c) Calculate the speed of the block after the force has been applied for 10 s.
What is the amplitude (in meters) of a wave whose displacement is given by y = 50.
sin(0.20x + 120t) cm?
A) 0.50 m
B) 1.0 m
C) 6 m
D) 0.20 m
E) 10 m
A vector has componentsAx< 0, andAy > 0, the angle that this vector makes with the
positive x-axis must be in the range
A) 0 to 90.
B) 90 to 180.
C) 180 to 270.
D) 270 to 360.
A beam of light passes through a polarizer and then an analyzer. In this process, the
intensity of the light transmitted is reduced to 10% of the intensity incident on the
analyzer. What is the angle between the axes of the polarizer and the analyzer?
A) 18
B) 22
C) 22
D) 68
E) 72
Suppose you want to set up a simple pendulum with a period of 0.250 s.
(a) What length is required if g = 9.80 m/s2 on Earth?
(b) What length would be required on the moon assuming g is 6 (assume exact) times
LESS than on Earth?
The diameter of no. 12 copper wire is 0.081 in. The maximum safe current it can carry
(in order to prevent fire danger in building construction) is 20. A. At this current, what
is the drift velocity of the electrons? (The number of electron carriers in one cubic
centimeter of copper is 8.5 1022.)
A soap film is being viewed in white light. As the film becomes very much thinner than
the wavelength of blue light, the film
A) appears black because it reflects no visible light.
B) appears blue since all other colors are transmitted.
C) appears white because it reflects all wavelengths of visible light.
D) appears red since all other colors are transmitted.
Consider a light bulb, in empty space, radiating 200. watts with its filament heated to
2800.°C. Assuming it is a good approximation to a black body.
(a) What is the area of the filament?
(b) If placed in an oven, with walls at 800.°C, what is its net power radiated now?
Ernest Rutherford
A) observed back-scattering from nuclei.
B) discovered radium and polonium.
C) proposed the tiny central nucleus idea.
D) invented the particle detector tube.
E) proposed the plum-pudding model.
8.0 grams of water initially at 100C are poured into a cavity in a very large block of ice
initially at 0°C. How many g of ice melt before thermal equilibrium is attained?
A) 10 g
B) 900 g
C) 500 g
D) 100 g
E) an unknown amount; it cannot be calculated without first knowing the mass of the
block of ice
A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm. What is
the highest frequency associated with this portion of the spectrum?
A) 1.50 x 1014 Hz
B) 7.50 x 1013 Hz
C) 7.50 x 1014 Hz
D) 7.50 x 1015 Hz
E) 1.50 x 1015 Hz
In a two-slit experiment, the third bright fringe away from the central fringe is observed
at an angle of 7.0. If the wavelength of the light is 490 nm, what is the distance between
the two slits?
A) 3.6 x 10-5 m
B) 4.0 x 10-6 m
C) 2.1 x 10-6 m
D) 2.1 x 10-5 m
E) 1.2 x 10-5 m
A wheel of moment of inertia of 5.00 kg-m2 starts from rest and accelerates under a
constant torque of 3.00 N-m for 8.00 s. What is the wheel's rotational kinetic energy at
the end of 8.00 s?
A) 57.6 J
B) 122.0 J
C) 91.9 J
D) 64.0 J
E) 78.8 J
Three point charges are located at the following positions: Q1 = 2.00 μC at x = 1.00 m;
Q2 = 3.00 μC at x = 0; Q3 = -5.00 μC at x = -1.00 m. What is the magnitude of the force
on the 3.00-μC charge?
A) 5.40 x 10-2 N
B) 0.135 N
C) 0.158 N
D) 8.10 x 10-2 N
E) 0.189 N
Which physical unit is the SI acceleration of gravity?
A) 40 km, SW
B) 32 ft/s2
C) 9.8 m/s2
D) 186,000 mi
E) -120 mi/s
What is the conversion factor between km/h and m/s?
A) 0.0278 m/s
B) 0.278 m/s
C) 3.60 m/s
D) 16.7 m/s
E) 36.0 m/s
Consider two copper wires. One has twice the length of the other. How do the
resistivities of these two wires compare?
A) The longer wire has twice the resistivity of the shorter wire.
B) Both wires have the same resistivity.
C) The longer wire has four times the resistivity of the shorter wire.
D) The shorter wire has twice the resistivity of the longer wire.
A child pulls a 3.00-kg sled across level ground at constant velocity with a light rope
that makes an angle 30.0 above horizontal. The tension in the rope is 5.00 N. Assuming
the acceleration of gravity is 9.81 m/s2, what is the coefficient of friction between the
sled and the ground?
A) 0.161
B) 0.188
C) 0.0441
D) 0.0851
E) 0.103
A moon is in orbit around its mother planet. Which of the following statements is
always true about its kinetic energy (K), and its gravitational potential energy (U)?
A) K is negative, and U is negative.
B) K is negative, and U is positive.
C) K is positive, and U is negative.
D) K is positive, and U is positive.
When the accelerating voltage in an X-ray tube is doubled, the minimum wavelength of
the X-rays
A) is increased to twice the original value.
B) is increased to four times the original value.
C) is decreased to one-fourth the original value.
D) is decreased to one-half the original value.
A single slit, which is 0.050 mm wide, is illuminated by light of 550 nm wavelength.
What is the angular separation between the first two minima on either side of the central
maximum?
A) 0.36
B) 0.47
C) 0.54
D) 0.63
E) 0.73
