Successive bright fringes in an interference pattern result from
A) equal-length distances from the slits.
B) distance from the slits successively increasing one wavelength at a time.
C) destructive interference.
D) none of the above
Two charged particles held close to each other are released. As they move, their speeds
increase. Therefore, their charges have
A) the same sign.
B) opposite signs.
C) either of these
D) need more information
The amount of gravitational force that acts on a space vehicle while in Earth orbit is
A) nearly zero.
B) nearly as much as the vehicle’s weight on Earth’s surface.
C) the same as the vehicle’s weight on Earth’s surface.
The moderate temperatures of islands throughout the world has much to do with water’s
A) good conductivity.
B) vast supply of internal energy.
C) high specific heat capacity.
D) high evaporation rate.
E) absorption of solar energy.
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.
The average braking force of a 1000-kg car moving at 10 m/s braking to a stop in 5 s is
A) 1000 N.
B) 2000 N.
C) 3000 N.
D) 4000 N.
E) 5000 N.
Just as water flows from a region of high pressure to a region of low pressure, electric
charge flows from a region of
A) high electric pressure to a region of low electric pressure.
B) high potential energy to a region of low potential energy.
C) deep to shallow regions.
D) all of the above
Which of the following cannot travel in a vacuum?
A) a light wave
B) a sound wave
C) a radio wave
D) all can
E) none can
A 60-W and a 100-W light bulb are connected in parallel to a 120-V outlet. Which bulb
draws more current?
A) 60-W bulb
B) 100-W bulb
C) both the same.
To turn 1 gram of boiling water to steam requires
A) almost as much energy as changing 1 gram of 0oC water to the boiling point.
B) as much as increasing 1 kilogram of 95oC water to the boiling point.
C) more energy than needed to turn 1 gram of absolute-zero ice to the boiling point.
D) none of the above
Which of these will penetrate into lead?
A) alpha particle
B) beta particle
C) gamma ray.
D) all of the above
When a gas is changed to a liquid, the gas
A) releases energy.
B) absorbs energy.
C) both of these
D) neither of these
In the electron-wave model of the atom, the orbit of an electron in the ground state
contains
A) a single wavelength.
B) multiple wavelengths.
C) even number quanta.
A ball starting from rest at the top of an inclined plane accelerates at 2 m/s2 and reaches
the bottom of the plane in 3 seconds. What is the length of the plane?
A) 2 m
B) 3 m
C) 5 m
D) 9 m
If the Sun were to disappear at this moment, we wouldn’t know about it for
A) 7 seconds, reflex time.
B) 8 seconds.
C) 8 minutes.
D) 8 hours.
Temperature is most closely related to molecular
A) kinetic energy.
B) potential energy.
C) electrical energy.
D) mechanical energy in general.
At normal atmospheric pressure and temperature, 1 cubic meter of air has a mass of
about
A) 1.00 kg.
B) 1.25 kg.
C) 2.00 kg.
D) 2.25 kg.
A galvanometer indicates
A) electric charge.
B) a flow of electrons.
C) electric voltage.
D) magnetic field strength.
How many colors of ink are used to print full-color pictures?
A) one plus black
B) two plus black
C) three plus black
D) four plus black
E) six plus black
Refraction causes the bottom of a swimming pool to appear
A) farther down than it actually is.
B) closer to the surface than it actually is.
C) neither of these
The mass of a lamb that weights 110 N is about
A) 1 kg.
B) 11 kg.
C) 110 kg.
D) 1100 kg.
E) none of the above
Marshmallows in a vacuum become
A) larger.
B) smaller.
C) flat.
D) a hollow shell.
E) none of the above
Interference is a property of
A) light waves.
B) sound waves.
C) water waves.
D) all of the above
E) none of the above
Carbon dating requires that the object being tested contain
A) organic material.
B) inorganic material.
C) charcoal.
D) none of the above
Magnetic fields are produced by
A) a tiny fraction of moving electrical charges.
B) most moving electrical charges.
C) all moving electrical charges.
When a boxer hits a punching bag, the strength of his punch depends on how much
force the bag can
A) endure.
B) exert on the boxer’s fist.
C) soften.
The work you do when pushing a shopping cart a given distance while applying twice
as much force is
A) half as much.
B) twice as much.
C) four times as much.
D) the same amount.
Distant dark mountains appear bluish because
A) they are far away.
B) yellow is being scattered.
C) you’re looking at low-level blue sky between you and the mountain.
D) of nature’s wonderful preferences.
The amount of energy ultimately converted to heat by an incandescent light bulb is
about
A) 10%.
B) 40%.
C) 80%.
D) 100%.
When the nucleus of an atom emits a beta particle, the atom’s atomic number
A) decreases.
B) remains unchanged.
C) increases.
When you stand with only one of your feet on a weighing scale, the scale reading is
A) half.
B) the same as with both feet.
C) doubled.
D) none of the above