Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
An object that completes 10 vibrations in 20 seconds has a frequency of
A) 0.5 hertz.
B) 2 hertz.
C) 200 hertz.
Flatten a spherical meatball into a hamburger and you increase its
A) surface area.
B) volume.
C) both of these
D) none of these
Reverberation is a phenomenon you would be most likely to hear if you sing in
A) the shower.
B) a small drape-covered room.
C) a large drape-covered room.
D) the desert.
Compared to smaller clouds with small droplets, a big cloud with large droplets
A) absorbs more light.
B) is darker.
C) is more likely to produce rain.
D) all the above
E) none of the above
A rock dropped from a 5-m height accelerates at 10 m/s2 and strikes the ground 1 s
later. If the rock is dropped from a height of 2.5 m, its acceleration of fall is
A) half.
B) the same.
C) twice.
D) four times as much.
When sound travels faster higher above the ground than below, bending of sound tends
to be
A) upward.
B) downward.
C) to the left.
D) to the right.
E) none of the above
The energy per photon in ultraviolet light is greater than in
A) radio waves.
B) microwaves.
C) visible light.
D) all of the above
E) none of the above
In the process of fluorescence, part of the input energy immediately
A) becomes internal energy with the rest as lower-frequency light.
B) cascades to excite other atoms in the material.
C) is emitted as higher-frequency light and the rest as lower-frequency light.
D) excites electrons to metastable states.
E) none of the above
Compared to the density of a kilogram of feathers, the density of a kilogram of lead is
A) less.
B) more.
C) the same.
The number of nodes in a standing wave of one wavelength, not including the
endpoints, is
A) 0.
B) 1.
C) 2.
D) 3.
E) 4.
Compared with air pressure on the outside, air pressure inside an inflated stretched
balloon is
A) less.
B) equal.
C) greater.
D) need more information
An object has gravitational potential energy due to its
A) speed.
B) acceleration.
C) momentum.
D) location.
E) none of the above
A heavy ball hangs by a string, with a second string attached to its bottom (Figure 4.8 in
your book). A quick pull on the bottom string breaks the
A) top string.
B) bottom string.
C) top or bottom string equally.
A cart changes its speed from 90 m/s to 100 m/s in 10 seconds. During this interval its
acceleration is
A) zero.
B) 1 m/s2.
C) 10 m/s2.
D) none of the above
If a gram of antimatter meets a kilogram of matter, the amount of mass to survive is
A) 1 gram.
B) 999 grams.
C) 1 kilogram.
D) 1.1 kilogram.
The pascal is a pressure unit equal to
A) 1 newton per square meter.
B) 1 kilogram per square meter.
C) 1 newton per square centimeter.
D) 1 kilogram per square centimeter.
Each of us weighs a tiny bit less inside the ground floor of a skyscraper than we do on
the ground away from the skyscraper because the
A) gravitational field is shielded inside the building.
B) mass of the building above slightly attracts us upward.
C) both of these
D) neither of these
The amplitude of a wave is 1 meter. The crest-to-trough distance of the wave is
A) 0.5 m.
B) 1 m.
C) 2 m.
D) none of the above
As a ball falls, the action force is the Earth's pull on the ball. The reaction force is the
A) air resistance acting against the ball.
B) acceleration of the ball.
C) ball's pull on Earth.
D) none of the above
By casually glancing at a scene on your TV you are
A) affecting the image.
B) participating in the action on the screen.
C) both of these
D) neither of these
Most of the radioactivity we personally encounter originates from
A) fallout from testing of nuclear weapons.
B) nuclear power plants.
C) medical X-rays.
D) the natural environment.
Pluto is classified by as a
A) full-fledged planet.
B) dwarf planet.
C) moon.
A motorboat that normally travels at 8 km/h in still water heads directly across a 6-km/h
flowing river. The resulting speed of the boat is about
A) 6 km/h.
B) 8 km/h.
C) 10 km/h.
D) 20 km/h.
When a rocket ship gaining speed in outer space runs out of fuel, it
A) gains speed for a short time, then slows down to a constant velocity.
B) gains speed for a short time, slows down, and eventually stops.
C) no longer gains speed.
The electric field between oppositely-charged parallel plates is
A) uniform.
B) stronger at the ends.
C) composed of field lines in opposite directions.
D) none of the above
A beam of electrons is employed in
A) a gold-foil experiment.
B) a cathode-ray tube.
C) a LED television screen.
D) an oil-drop experiment.
Which is heated in its interior by nuclear processes?
A) Sun
B) Earth
C) both of these
D) neither of these
Which of these atoms has the greatest amount of electrical charge in its nucleus?
A) helium
B) carbon
C) iron
D) gold
E) uranium
The sources of X-rays are
A) electron clouds.
B) the atomic nucleus.
C) both of these
D) neither of these
Compared to a bar of pure gold, the density of a pure gold ring is
A) less.
B) the same.
C) slightly more.
D) much more.
The equivalent resistance of any series of resistors in a circuit is
A) often less than the resistance of the lowest resistor.
B) always less than the resistance of the lowest resistor.
C) usually half the value of the lowest resistor.
D) none of the above
When you blow air between a pair of closely-spaced Ping-Pong balls suspended by
strings, the balls will swing
A) toward each other.
B) away from each other.
C) away from the air stream, but not necessarily toward or away from each other.
A buoyant force acts on
A) gas-filled balloons.
B) you and your classmates.
C) both of these
D) neither of these
