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A hockey puck sliding at constant velocity across the ice is
A) in equilibrium.
B) nearly in equilibrium.
C) is nowhere near being in equilibrium.
D) none of the above
A node is a position of
A) minimum amplitude.
B) maximum amplitude.
C) half amplitude.
Consider the fictional case of the incredible shrinking woman. If a fictional shrinking
woman shrinks to 0.1 her original height, her total skin area shrinks to
A) 0.1 times its original value.
B) 0.01 times its original value.
C) 0.001 times its original value.
D) 0.0001 times its original value.
E) none of the above
When a system does work without adding heat, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
D) none of the above
Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized
A) the acceleration of free fall.
B) rates of time.
C) the role of distance in describing motion.
D) none of the above
Sound interference with a pair of radio loudspeakers can be nicely demonstrated when
the
A) radio signal is monaural for each.
B) input and output of the speakers are reversed.
C) speakers are brought face to face.
D) all of the above
E) none of the above
A mixture of red and green pigments appears
A) orange.
B) yellow.
C) magenta.
D) blue.
E) muddy-brown.
Due to the presence of ice crystals in nearly frozen liquid water, the density of water is
A) lower.
B) unaffected.
C) higher.
A ball is thrown vertically into the air. Because of air resistance, its speed when it
returns to its starting level compared with its initial speed is
A) less.
B) the same.
C) more.
The length of a 100-meter long spaceship passing by you at 0.87c is seen to be
A) 50 m.
B) 87 m.
C) 100 m.
D) 125 m.
E) 150 m.
Eratosthenes first learned about the position of the Sun in mid-summer by
A) consulting library information.
B) setting up a stick at Syene.
C) setting up a stick at Alexandria.
D) setting up sticks at both Syene and Alexandria.
E) none of the above
An ideal Polaroid will transmit 50% of incident sunlight. How much light will be
transmitted by two ideal Polaroids oriented with their axes parallel to each other?
A) 0%
B) 50%
C) 100%
D) between 0% and 50%
E) between 50% and 100%
Discrete radii and energy states of atoms were first explained by electrons circling the
atom in an integral number of
A) wave frequencies.
B) de Broglie wavelengths.
C) diffraction patterns.
D) high-speed particles.
E) none of the above
Which of these is not a form of solar energy?
A) wind energy
B) fossil fuel energy
C) geothermal energy
D) hydroelectric power
Magnification can be accomplished with a hologram when viewed with light that has a
A) longer wavelength than the original light.
B) shorter wavelength than the original light.
C) neither for holograms cannot be magnified.
What is the molecular mass of a water molecule?
A) 10 amu
B) 12 amu
C) 15 amu
D) 18 amu
E) none of the above
In a heat pump, cooling is accomplished when
A) condensation occurs in its coils.
B) vaporization occurs in its coils.
C) both of these
D) neither of these
Two charged particles held a certain distance apart are released. As they move, the
acceleration of each decreases. Therefore, their charges have
A) the same sign.
B) opposite signs.
C) need more information
A dolphin perceives greater detail by emitting sounds of
A) lower frequency.
B) higher frequency.
C) greater intensity.
D) greater speed.
E) none of the above
The sensation of color is seen when light falls on the eye's
A) rods.
B) cones.
C) both of these
D) neither of these
The primary purpose of a lightning rod is to
A) attract lightning and guide it to the ground.
B) discharge the structure to which it is attached.
C) cancel the electric field within the structure to which it is attached.
D) induce a charge opposite to that of charged clouds overhead.
A piece of glass that appears red
A) absorbs or reflects all colors except red.
B) transmits red.
C) both of these
D) neither of these
When a rocket forces exhaust gases downward, the exhaust gases
A) as the name implies, soon exhaust their influence.
B) play no further role in the motion of the rocket.
C) exert an upward force on the rocket.
If the mass of Earth somehow increased with no change in radius, your weight would
A) increase also.
B) decrease.
C) stay the same.
The center of mass of a human body is located at a point that
A) is fixed, but different for different people.
B) is always directly behind the belly button.
C) changes as a person bends over.
D) none of the above
If we increase the brightness of violet light shining on a photosensitive surface we also
increases the
A) number of electrons ejected per second.
B) kinetic energy of the ejected electrons.
C) threshold frequency.
D) time lag between the absorption of blue light and ejection of electrons.
E) none of the above
An aurora borealis high above the atmosphere is due to
A) disturbances in Earth's magnetic field.
B) fountains of high-speed charged particles.
C) trapping of charged particles by Earth's magnetic field.
D) all of the above
Ten seconds after starting from rest, a car is moving at 40 m/s. What is the car's
acceleration?
A) 0.25 m/s2
B) 2.8 m/s2
C) 4.0 m/s2
D) 10 m/s2
E) 40 m/s2
When an object is partly or wholly immersed in a liquid, it is buoyed up
A) by a force equal to its own weight.
B) by a force equal to the weight of liquid displaced.
C) and floats in accord with Archimedes' principle.
D) all of the above
E) none of the above
X-rays are emitted by way of
A) ionizing radiation.
B) transitions within an atom's innermost electrons.
C) transitions within the atomic nucleus.
D) none of the above
The thing that "waves" in the Schrdinger equation is a
A) particle's position.
B) particle's momentum.
C) wave function.
D) all of the above
E) none of the above
When radium (A = 88) emits an alpha particle, the resulting nucleus has atomic number
A) 86.
B) 88.
C) 90.
D) 92.
E) none of the above
In the equation E = hf, the symbol h stands for
A) half-life.
B) momentum as it pertains to light.
C) energy per photon wavelength.
D) none of the above
Just as in hydraulic circuits there is water pressure, in electric circuits there is
A) current.
B) voltage.
C) resistance.
