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Which force field can increase a moving electron's speed?
A) electric field
B) magnetic field
C) both of these
D) neither of these
Imagine a single charge q placed on one corner of a square, and that the electric field at
the center of the square is F/q. If additional equal charges are placed on the other three
corners, the electric field at the center of the square due to these four equal charges is
A) F/q.
B) 4F/q.
C) F/(2q).
D) F/(4q).
E) none of the above
To "spear" a red fish with a red laser beam and compensate for refraction, aim your
laser
A) directly at the sighted fish.
B) above the sighted fish.
C) below the sighted fish.
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.
For 1 gram of radioactive material that has a half-life of one year, after 4 years the
original radioactive material left will be
A) 0 g.
B) 1/2 g.
C) 1/4 g.
D) 1/8 g.
E) none of the above
Steam that issues from a pressure cooker
A) is invisible.
B) cools as it expands.
C) both of these
D) neither of these
At night an underwater scuba diver aims a flashlight beam toward the surface at 15o to
the normal. Upon emerging into the air, the beam angle will be
A) less than 15o.
B) 15o.
C) more than 15o.
D) impossible to predict.
A dropped ball gains speed because
A) its velocity changes.
B) a gravitational force acts on it.
C) of inertia.
D) its nature is to become closer to Earth.
Which statement is correct?
A) charge flows in a circuit
B) voltage flows in a circuit
C) resistance flows in a circuit
D) all of the above
In the electron-wave model of the atom, an electron in the second energy level contains
A) a single wavelength.
B) two wavelengths.
C) any number of wavelengths.
D) none of the above
Entropy is most closely related to the
A) first law of thermodynamics.
B) second law of thermodynamics.
C) both of these
D) neither of these
If Earth rotated more slowly about its axis, your weight would
A) increase.
B) decrease.
C) stay the same.
D) be zero.
A ball thrown straight upward takes 10 seconds for its up-and-down round trip. Because
of air resistance, the time taken for the ball just to go up is
A) less than 5 s.
B) 5 s.
C) more than 5 s.
Which of the following has the largest momentum relative to Earth's surface?
A) a tightrope walker crossing Niagara Falls
B) a pickup truck speeding along a highway
C) a Mack truck parked in a parking lot
D) the Science building on campus
E) a mouse running across your room
A substance that heats up relatively slowly has a
A) high specific heat capacity.
B) low specific heat capacity.
C) either of these
D) neither of these
An industrial flywheel has a greater rotational inertia when most of its mass is
A) nearer the rim.
B) nearer the axis.
C) uniformly spread out as in a disk.
Processes can proceed from disorder to order
A) when input energy is supplied.
B) on an everyday occurrence.
C) never.
D) none of the above
If a turntable's rotational speed is doubled, then the linear speed of a pet hamster sitting
on the edge of the record will
A) double.
B) halve.
C) remain the same.
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.
When Eddie Electron experiences an electrical shock, the source of electrons
composing the shock is
A) the ground beneath Eddie's feet.
B) Eddie's body.
C) the power plant.
D) whatever electric device being handled.
E) electric field in the air.
A new Moon appears in the sky just before the time of a
A) solar eclipse.
B) lunar eclipse.
C) both of these
D) neither of these
A girl standing on the ground observes a rocket ship move past her at half the speed of
light. Compared to the rocket's length at rest, she sees the rocket's length as
A) longer.
B) shorter.
C) the same length.
According to Einstein's theory of special relativity
A) space and time are aspects of each other.
B) energy and mass are aspects of each other.
C) both of these
D) neither of these
A Mack truck and a Volkswagen traveling at the same speed have a head-on collision.
The vehicle that undergoes the greatest change in velocity will be the
A) Volkswagen.
B) Mack truck.
C) same for both.
If a star that is 10 light-years away from Earth explodes, gravitational waves from the
explosion will reach Earth in
A) less than 10 years.
B) more than 10 years.
C) 10 years.
The reason you can walk barefoot on red-hot coals of wood without burning your feet
mainly involves
A) low temperature of the coals.
B) low conductivity of the coals.
C) mind over matter techniques.
The frequency of the second hand on a clock is
A) 1 hertz.
B) 1/60 hertz.
C) 60 hertz.
Pour two liters of water at 40oC into one liter of water at 20oC and the final temperature
of the two becomes
A) less than 30oC.
B) at or about 30oC.
C) more than 30oC.
When an object of mass m is pushed to relativistic speed v, its momentum is
A) greater than mv.
B) smaller than mv.
C) equal to mv.
When water is turned on in a shower, the shower curtain moves towards the water
spray. This partly involves
A) capillary action.
B) surface tension.
C) pressure changes in moving fluids.
D) none of the above
How many octaves exist between 40 hertz and 1280 hertz?
A) 5
B) 6
C) 7
D) 8
E) 9
