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Science later greatly advanced when Galileo favored
A) philosophical discussions over experiment.
B) experiment over philosophical discussions.
C) nonmathematical thinking.
D) none of the above
Answer:
The average speed of light is greatest in
A) red glass.
B) orange glass.
C) green glass.
D) blue glass.
E) same in all of these
Answer:
If you drop a bar magnet in a vertical copper pipe it will fall slowly because
A) of air resistance.
B) it induces a magnetic field in the pipe that resists motion of the magnet.
C) the copper is a good conductor of both electricity and magnetism.
D) of electron repulsion.
Answer:
Different colors of light correspond to different light
A) velocities.
B) intensities.
C) polarities.
D) frequencies.
E) none of the above
Answer:
While you stand on the floor you are pulled downward by gravity, and supported
upward by the floor. Gravity pulling down and the support force pushing up
A) make an action-reaction pair of forces.
B) do not make an action-reaction pair of forces.
C) need more information
Answer:
Most of the matter in our galaxy is in the
A) solid phase.
B) liquid phase.
C) gaseous phase.
D) plasma phase.
E) none of the above
Answer:
The force that acts between a pair of magnetic poles depends on
A) magnetic pole strength.
B) separation distance.
C) both of these
D) neither of these
Answer:
When you walk barefoot on red-hot wooden coals it is best if
A) no pieces of metal are among the coals.
B) you walk slowly to demonstrate your courage.
C) you impress your friends by carrying away bits of wood between your toes.
D) all of the above
E) none of the above
Answer:
The heat we enjoy on a sunny day is due mainly to the Sun's
A) high surface temperature.
B) relatively close distance.
C) enormous size.
D) none of the above
Answer:
Which of these has the greatest number of protons in its nucleus?
A) gold
B) mercury
C) lead
D) silver
Answer:
A mirage is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations.
Answer:
Sometimes a flashlight filament glows red instead of white, which indicates a lowness
of
A) current in the filament.
B) filament temperature.
C) both of these
D) neither of these
Answer:
The chemical properties of matter are due mostly to their
A) protons.
B) electrons.
C) neutrons.
Answer:
An object that has kinetic energy must be
A) moving.
B) falling.
C) at an elevated position.
D) at rest.
E) none of the above
Answer:
Atmospheric pressure is caused by the
A) density of the atmosphere.
B) weight of the atmosphere.
C) temperature of the atmosphere.
D) solar energy on the atmosphere.
Answer:
What did Millikan measure in his oil-drop experiment?
A) the electric charge of an electron
B) the mass of an electron
C) the mass of oil drops
D) none of the above
Answer:
The number of nodes in a standing wave of three wavelengths, not including the
endpoints, is
A) 2.
B) 3.
C) 4.
D) 5.
E) 6.
Answer:
Compared with sea-level cooking, in cooking eggs by boiling in mountain regions you
should boil the eggs
A) with a hotter flame.
B) for a shorter time.
C) for a longer time.
D) all of the above
E) none of the above
Answer:
Although electrons in metal move in haphazard directions at many times the speed of
sound, the drift speed of electrons that compose electric current is
A) a fraction of a centimeter per second.
B) many centimeters per second.
C) the speed of a sound wave.
D) the speed of light.
E) none of the above
Answer:
An airplane travels at 141 km/h toward the northeast. What is its component of velocity
due north?
A) 41 km/h
B) 100 km/h
C) 110 km/h
D) 141 km/h
Answer:
Radioactivity in the world is something
A) relatively new.
B) as old as the world itself.
C) to become frantic about.
Answer:
The force that propels a cannonball when fired from a cannon is
A) huge compared to the recoil force on the cannon.
B) equal and opposite to the force the ball exerts on the cannon.
C) in some cases, equal and opposite to the force the ball exerts on the cannon.
Answer:
Which rocket would require more fuel?
A) one going from the Moon to Earth.
B) one going from Earth to the Moon.
C) both the same.
Answer:
Rapid evaporation of hot water can lead to
A) superheated steam.
B) the formation of ice.
C) both of these
D) neither of these
Answer:
A mass spectrometer separates
A) ions of different elements.
B) different-mass ions of the same element.
C) different-mass ions of the same speed.
D) all of the above
E) none of the above
Answer:
Between the consumer and the power plant, most importantly, are
A) huge capacitors.
B) generators.
C) step-down transformers.
D) all of the above
E) none of the above
Answer:
A force of 1 N accelerates 1-kg box at the rate of 1 m/s2. The acceleration of a 2-kg box
by a net force of 2 N is
A) half as much.
B) twice as much.
C) the same.
D) none of the above
Answer:
If you measure the width of an outdoor barn with a steel tape on a very cold day, your
measured width will be
A) a bit short.
B) a bit long.
C) the same as on an average-temperature day.
Answer:
A key feature of the theory of chaos is
A) unpredictability.
B) very small initial differences can lead to very large eventual differences.
C) the randomness of molecular motion makes prediction difficult.
D) even orderly systems are seen to be disorderly when carefully studied.
Answer:
An electric motor is very similar to
A) an electric generator.
B) an automobile battery.
C) a radio receiver.
D) none of the above
Answer:
A thin film appears cyan when illuminated with white light. The color being cancelled
by destructive interference is
A) red.
B) green.
C) white.
D) blue.
E) none of the above
Answer:
