Water pressure on a submerged object is greatest against its
A) top.
B) bottom.
C) sides.
D) same against all surfaces
E) none of the above
The power consumed by a device drawing 0.8 A when connected to 120 V is
A) 12 W.
B) 15 W.
C) 60 W.
D) 96 W.
E) 120 W.
Repeatedly dipping your fingers into water produces waves. Increasing the frequency of
dipping produces waves that are
A) shorter.
B) longer.
C) the same.
Which of the following is NOT a mixture?
A) granite
B) cake
C) air
D) beach sand
E) none of the above
An acoustical engineer in designing a music hall is concerned with
A) echoes.
B) reflection.
C) reverberations.
D) all of the above
E) none of the above
The speed of a satellite orbiting Earth is given by v = √(GM/d). Escape speed from
Earth is given by v = √(2GM/d), where in both cases G is the gravitational constant, M
is Earth’s mass, and d is distance from Earth’s center. If a satellite’s kinetic energy were
doubled it could
A) orbit at twice its distance from Earth.
B) orbit at four times the distance from Earth.
C) escape Earth.
Musical tones are characterized by
A) pitch.
B) loudness.
C) quality.
D) all of the above
E) none of the above
If a poor absorber of radiation were a good emitter, its temperature would be
A) less than its surroundings.
B) more than its surroundings.
C) the same as its surroundings.
Suppose the Moon had twice the diameter but the same mass and same orbital distance
from Earth. In that case, the high tides on Earth would be
A) higher.
B) lower.
C) unequal in size.
D) practically the same.
E) none of the above
Water can be turned to ice by
A) lowering the surrounding air pressure.
B) extracting energy.
C) both of these
D) neither of these
The orbital path of a satellite has two focal points. When both focal points are together
A) the satellite path is an ellipse.
B) the satellite path is a circle.
C) satellites lose speed.
Cosmic rays penetrate your body when
A) safely in your home.
B) outdoors.
C) in mountainous regions.
D) all of the above
E) none of the above
A bag of groceries that has a mass of 10 kilograms weighs about
A) 1 N.
B) 10 N.
C) 100 N.
D) 1000 N.
E) greater than 1000 N.
In terms of thermal expansion it is important that
A) a key and its lock are made of similar or the same material.
B) the fillings in your teeth expand at the same rate as teeth.
C) iron rods and concrete in which they’re embedded expand equally.
D) all of the above
E) none of the above
Light travels through non-cubic transparent crystals
A) in mutually perpendicular directions.
B) without refracting.
C) and becomes polarized in the process.
D) at different speeds along different optic axes.
E) none of the above
Which of these are good insulators?
A) feathers.
B) wood.
C) snow.
D) all the above
E) none of the above
When two lamps are connected in parallel to a battery, the electrical resistance that the
battery senses is
A) more than the resistance of either lamp.
B) less than the resistance of either lamp.
C) none of these
The temperature at the bottom of Lake Tahoe, high in the Sierra Nevada Mountains in
California, at this moment is
A) below 4oC.
B) 4oC.
C) above 4oC.
D) uncertain.
Plutonium is extremely rare in natural ore deposits because it
A) is artificially created.
B) is chemically inert.
C) is a gas at room temperature.
D) has a tiny half-life compared with the age of Earth.
E) none of the above
Compared to radio waves, the velocity of visible light waves in a vacuum is
A) less.
B) more.
C) the same.
Sound waves cannot travel in
A) air.
B) water.
C) steel.
D) a vacuum.
Waves diffract the most when their wavelength is
A) short.
B) long.
C) both of these
D) neither of these
In both fission and fusion, mass
A) is created from energy of other forms.
B) converts to kinetic energy.
C) converts to gamma radiation.
D) remains the same.
What did Millikan measure in his oil-drop experiment?
A) the electric charge of an electron
B) the mass of an electron
C) the mass of oil drops
D) none of the above
If a car increases its velocity from zero to 60 m/s in 10 seconds, its acceleration is
A) 3 m/s2.
B) 6 m/s2.
C) 60 m/s2.
D) 600 m/s2.
Standing at the shore of a still lake, the reflected view of scenery on the other side of
the lake is the view you would see if you were upside down with your eye in the line of
sight
A) where it already is.
B) at the surface of the water where the light reflects.
C) directly beneath you, as far below water level as you are above.
D) close to the distant shore.
E) none of the above
The concept of force is fundamental to
A) Newton’s theory of gravitation.
B) Einstein’s theory of gravitation.
C) both of these
D) neither of these
If you stretch a copper wire so that it is thinner, the resistance between its ends
A) decreases.
B) remains unchanged.
C) increases.
A force field is induced in any region of space in which
A) an electric field changes with time.
B) a magnetic field changes with time.
C) both of these
D) neither of these
A parcel of warmed air rises due to
A) random molecular motion.
B) radiation.
C) buoyancy.
D) increased energy of its molecules.
Water waves pass by a piece of cork floating on the water that bobs up and down one
complete cycle each second. The waves are 2 meters long. What is the speed of the
wave?
A) 0.25 m/s
B) 0.50 m/s
C) 1.0 m/s
D) 2 m/s
E) 4 m/s
If each dimension of a steel bridge is scaled up ten times, its strength will be multiplied
by about
A) ten and its weight by ten also.
B) one hundred, and its weight by one thousand.
C) one thousand, and its weight by one hundred thousand.
D) none of the above
You cannot exert a force on a wall
A) if the wall resists.
B) unless you put your mind to it.
C) unless the wall simultaneously exerts the same amount of force on you.