Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
Compared to its average speed in air, the average speed of a beam of light in glass is
A) more.
B) less.
C) the same.
When you touch a nail stuck in ice, energy flows from
A) the ice to your hand.
B) your hand to the ice.
C) both of these
D) neither of these
If an electron vibrates up and down 1000 times each second, it generates an
electromagnetic wave having a
A) period of 1000 s.
B) speed of 1000 m/s.
C) wavelength of 1000 m.
D) frequency of 1000 Hz.
E) wavelength of 1000 km.
Both electrons and protons have equal-magnitude
A) mass.
B) charge.
C) energy.
D) all of the above
E) none of the above
Astronomers can detect the spin rates of stars by
A) their temperature.
B) changes in temperature.
C) absorption spectra.
D) the Doppler effect.
E) all of the above
For a pair of Polaroids with axes at 45 degrees to each other
A) light will not pass.
B) light that passes is dimmer than for a parallel orientation.
C) another Polaroid is necessary for any light to pass.
Half-way to the center of a completely hollow planet with a thin uniform shell, your
weight would be
A) one-quarter of your weight on the surface.
B) one-half of your weight on the surface.
C) three-quarters of your weight on the surface.
D) the same as at the surface.
E) zero.
A liter of hot water will cool to room temperature faster in a
A) black pot.
B) silver pot.
C) red pot.
D) none of the above
A wave oscillates up and down two complete cycles each second. If the wave travels an
average distance of 6 meters in one second, its wavelength is
A) 0.5 m.
B) 1 m.
C) 2 m.
D) 3 m.
E) 6 m.
A wiggle in time is a
A) vibration.
B) wave.
C) both of these
D) neither of these
You can safely hold your fingers on both sides of a candle flame due mainly to
A) conduction.
B) convection.
C) radiation.
D) none of the above
The speed of a sound wave in air depends on
A) its frequency.
B) its wavelength.
C) air temperature.
D) all of the above
E) none of the above
When voltage is induced in a coil of wire, current is
A) also induced.
B) not induced.
C) cancelled.
When a load is placed on a properly arched structure, compression
A) weakens the structure.
B) strengthens the structure.
C) neither of these
We don't hear the squeaks of bats because their sound is
A) of ultra-high frequencies.
B) of ultra-high loudness.
C) both of these
D) neither of these
Melting snow tends to
A) warm the surrounding air.
B) cool the surrounding air.
C) neither of these
A floating ice cube contains small pieces of iron. The water level after melting will
A) rise.
B) fall.
C) remain unchanged.
Argon rather than air is the gas used in incandescent bulbs because
A) it produces a pleasing bluish glow.
B) oxygen in air oxidizes the lamp filament.
C) argon is relatively plentiful.
D) none of the above
The paths of fragments of fireworks are
A) normally straight lines.
B) parabolas.
C) different from the paths of projectiles.
A nuclear power plant is very similar to
A) nuclear bombs, but with more control.
B) any conventional power plant, but with uranium as fuel.
C) a photovoltaic solar cell power plant.
D) all of the above
E) none of the above
If you rub an inflated balloon against your hair and place the balloon against the wall it
will stick to the wall, illustrating
A) Coulomb's law.
B) conduction and insulation.
C) charge polarization.
D) voltage.
The amount of current in a CFL rated 23W 120V is about
A) 0.2A.
B) 5.2A.
C) more than 5.2A.
A neutron will more likely slow in speed if it bounces from a
A) light-weight nucleus.
B) nucleus of moderate mass.
C) heavy nucleus.
D) none of the above
Which can undergo diffraction?
A) photons.
B) electrons.
C) positrons.
D) all of the above
E) none of the above
The sources of X-rays are
A) electron clouds.
B) the atomic nucleus.
C) both of these
D) neither of these
The crescent shapes of spots of light cast through openings in trees occurs with a
A) partial eclipse of the Sun.
B) total eclipse of the Sun.
C) lunar eclipse, partial or total.
D) partial lunar eclipse.
Alcohol is less dense than water. If alcohol is used to make a barometer at normal
atmospheric pressure, the height of the alcohol column would be
A) less than 10.3 m.
B) 10.3 m.
C) more than 10.3 m.
Normally a small party balloon charged to several thousand volts will have a relatively
small amount of
A) charge.
B) energy.
C) both of these
D) neither of these
Tripling the linear size of an object multiplies its area by
A) 3 and its volume by 9.
B) 9 and its volume by 18.
C) 9 and its volume by 27.
D) 27 and its volume by 81.
E) none of the above
A circuit breaker often serves the same purpose as a
A) battery
B) fuse.
C) capacitor.
D) all of the above
E) none of the above
If you shine a flashlight "horizontally" from one wall to an opposite wall inside an
accelerating spaceship in deep space, you will see the light traveling
A) in a straight-line path.
B) in a parabolic path.
C) along the arc of a circle.
When you stand at rest with your left foot on one bathroom scale and your right foot on
a similar scale, each of the scales will
A) read half your weight.
B) read your weight.
C) show readings that when added equal your weight.
D) cancel your weight.
