Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
Which of these lamps has no mercury content?
A) fluorescent lamp
B) CFL
C) incandescent lamp
D) none of the above
When a vertically falling firecracker bursts, the vector sum of momentum fragments
A) in the horizontal direction cancels to zero.
B) in the vertical direction equals the momentum of the firecracker before bursting.
C) both of these
D) neither of these
Applying E = hf to photon emission from an atom, the symbol E represents the energy
A) of the emitted photon.
B) difference between atomic energy levels producing the photon.
C) both of these
D) neither of these
The Doppler effect is characteristic of
A) water waves.
B) sound waves.
C) light waves.
D) all of the above
E) none of the above
When a baseball player bats a ball with a force of 1000 N, the reaction force that the
ball exerts against the bat is
A) less than 1000 N.
B) more than 1000 N.
C) 1000 N.
D) need more information
What is the weight of water displaced by a 100-ton floating ship?
A) less than 100 tons
B) 100 tons
C) more than 100 tons
D) 100 cubic meters
E) depends on the ship's shape
An electron microscope makes use of
A) short wavelengths of light.
B) the wave nature of electrons.
C) electron attraction and repulsion.
D) electron current.
E) the inertia of electrons.
A laser cannot emit more energy than is put into it. But in instances where stored energy
can be released in a very short time, the laser
A) puts out more energy than is put into it.
B) has a greater power output than power input.
C) both of these
D) neither of these
According to quantum physics, measuring the temperature of lava from a distant
volcano by photographing its color with a telescopic camera measurably affects the
lava's temperature.
A) True
B) False
C) both of these depending on circumstances
Multiple the equation for linear momentum by radial distance r and you have
A) rotational kinetic energy.
B) angular momentum.
C) rotational inertia.
A red crab very deep in water, where sunlight is dim, appears
A) red.
B) orange.
C) cyan.
D) brown.
E) no color"black.
Approximately how much air is in a column 1-cm2 in cross section that extends from
sea level to the top of the atmosphere?
A) 1 gram
B) 1 kg
C) 10 kg
D) 100 kg
A force that determines the chemical properties of an atom is
A) a friction force.
B) a nuclear force.
C) a gravitational force.
D) an electrical force.
E) none of the above
Galileo taught us that if you roll a ball along a level surface it will
A) soon slow down due to its natural place.
B) keep rolling if friction is absent.
C) roll as long as its inertia nudges it along.
D) soon roll in the opposite direction.
On a balanced seesaw, a boy three times as heavy as his partner sits
A) less than 1/3 the distance from the fulcrum.
B) 1/3 the distance from the fulcrum.
C) more than 1/3 the distance from the fulcrum.
To become a positive ion, an atom must
A) lose an electron.
B) gain an electron.
C) lose a proton.
D) gain a proton.
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
Evaporation is a cooling process and condensation is
A) a warming process.
B) a cooling process also.
C) neither of these
A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided
with
A) 6 ohms.
B) 6 amperes.
C) 6 joules.
D) 6 watts.
E) 6 newtons.
A buoyant force acts on
A) gas-filled balloons.
B) you and your classmates.
C) both of these
D) neither of these
The bob of a simple pendulum has its maximum kinetic energy at the
A) top of its swing.
B) bottom of its swing.
C) midpoint between top and bottom.
D) at all points along its path of swing.
Wave interference occurs in
A) transverse waves.
B) longitudinal waves.
C) both of the above
D) none of the above
Which ball is more elastic?
A) a common rubber ball
B) a steel ball
C) both the same
A thin film appears magenta 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
If the speed of a bicycle is reduced to half before skidding to a stop, it will skid
A) one-eighth as far.
B) one-fourth as far.
C) one-half as far.
D) none of the above
If you do work on a skateboard loaded with friends in one-third the usual time, you
expend
A) one third as much power.
B) the usual power.
C) three times the usual power.
D) need more information.
An electron and a proton
A) attract each other.
B) repel each other.
C) neither attract nor repel each other.
When a pulse of white light is incident on a glass prism, the first color to emerge is
A) red.
B) orange.
C) green.
D) violet.
Centripetal force does no work on a circularly-moving object because
A) no change in energy occurs.
B) rotational energy transfers to kinetic energy.
C) centripetal force has no component in the direction of motion.
D) none of the above.
Two protons removed from an oxygen nucleus result in
A) nitrogen.
B) carbon.
C) helium.
D) neon.
E) positively charged oxygen.
A bubble of air released from the bottom of a lake
A) rises to the top at constant volume.
B) becomes smaller as it rises.
C) becomes larger as it rises.
D) alternately expands and contracts as it rises.
E) none of the above
The air pressure in a container of air at 27oC will double when heated to
A) 54 degrees C.
B) 300 degrees C.
C) 327 degrees C.
D) 600 degrees C.
E) none of the above
The force that causes Earth to orbit the Sun is due to gravity, while the force needed to
keep Earth moving as it circles the Sun is
A) inertia.
B) due to gravity.
C) due to both inertia and gravity.
D) no force at all.
How many different kinds of elements are in a water molecule?
A) one
B) two
C) three
D) four
E) none
