Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
According to Kepler, the paths of planets about the Sun are
A) parabolas.
B) circles.
C) straight lines.
D) ellipses.
E) none of the above
If a freely falling object were equipped with a speedometer on a planet where the
acceleration due to gravity is 20 m/s2, then its speed reading would increase each
second by
A) 10 m/s.
B) 20 m/s.
C) 30 m/s.
D) 40 m/s.
E) depends on its initial speed
If an object moves with constant acceleration, its velocity must
A) be constant also.
B) change by the same amount each second.
C) change by varying amounts depending on its speed.
D) always decrease.
Which is not a color?
A) yellow-green
B) black
C) both of these
D) neither of these
Fourier analysis makes central use of
A) wave superposition.
B) partial tones.
C) harmonics.
D) none of the above
When a pair of 10-N forces act on a box of candy, the net force on the box is
A) zero.
B) about 14 N.
C) 20 N.
D) Any of the above depending on the directions of forces.
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
The conventional direction of magnetic field lines outside a magnet are from
A) north to south.
B) south to north.
C) either way
When a twirling ice skater brings her arms inward, her rotational speed
A) decreases.
B) remains the same.
C) increases.
A capacitor is useful in
A) boosting the energy output of a circuit.
B) increasing the current in a resistor.
C) smoothing pulsed current.
D) changing dc to ac in a circuit.
E) increasing or decreasing voltage.
If you wish to keep chicken warm in a shed on a cold night, the best lamp to use is
A) an incandescent lamp.
B) a fluorescent lamp.
C) an LED lamp.
D) a CFL lamp.
Which is more dangerous, touching a faulty 110-volt light fixture, or a Van de Graaff
generator charged to 100,000 volts?
A) touching the light fixture
B) touching the generator
C) touching both are about equally dangerous.
A light source blinks once per second in its own frame of reference. As you approach
the blinking source, you observe the frequency of blinks to be
A) less than 1 Hz.
B) 1 Hz.
C) more than 1 Hz.
When Peter tosses an egg against a sagging sheet, the egg doesn't break due to
A) reduced impulse.
B) reduced momentum.
C) both of these
D) neither of these
Suspend your body from a pair of ropes slightly angled from the vertical and the tension
in each rope will be
A) equal your weight.
B) half your weight.
C) greater than half your weight.
D) none of these
Alpha particles and beta particles are deflected by a magnetic field in
A) opposite directions.
B) perpendicular directions to each other.
C) the same direction.
When you drop a rubber ball on the floor it bounces back. The force exerted on the ball
to produce bouncing is by the
A) ball.
B) floor.
C) need more information
Three-dimensional viewing normally involves
A) parallax.
B) two-eye vision.
C) an ability to see 'around' things.
D) all of the above
E) none of the above
Sun's radiant energy is composed of shorter wavelengths than Earth's due to Sun's
greater
A) size.
B) surface temperature.
C) both of these
D) neither of these
One joule per coulomb is a unit of
A) energy.
B) power.
C) voltage.
D) current.
E) resistance.
In drinking soda or water through a straw, we make use of
A) capillary action.
B) surface tension.
C) atmospheric pressure.
D) Bernoulli's principle.
E) none of the above
An 80-km/h airplane flying against a 10-km/h head wind has a groundspeed of
A) 10 km/h.
B) 70 km/h.
C) 80 km/h.
D) 90 km/h.
If the temperature of a sample of water at 0oC is slightly increased, its volume
A) increases.
B) decreases.
C) remains the same.
Nellie pulls with a force of 50 N on a horizontal rope tied to a tree at rest. The net force
on the rope is
A) 50 N and rope tension is 0 N.
B) 50 N and rope tension is also 50 N.
C) zero and rope tension is 50 N.
D) zero and rope tension is also zero.
A single raindrop illuminated by sunshine disperses
A) a single color.
B) mainly light of mid-frequency colors.
C) all the colors of the rainbow.
A current-carrying loop of wire experiences no tendency to rotate in a magnetic field
when
A) field lines pass directly through the loop.
B) no field lines pass through the loop.
C) none of these
You stand on your skateboard and exert a 50-N push on the wall next to you. If your
mass is 60 kg you'll momentarily accelerate from the wall at about
A) 0.08 m/s2.
B) 0.8 m/s2.
C) 8.0 m/s2.
D) none of the above
Figure S-4
A supersonic aircraft flies between observers A and B as shown. The resulting sonic
boom will soon be heard by
1) only observer A.
2) only observer B.
3) both A and B.
4) neither A nor B.
The intensity of the sonic boom depends on the
5) speed of the aircraft.
6) size of the aircraft.
7) distance from the aircraft.
8) all of the above.
9) none of the above.
A vertically oriented rocket that is able to sustain a continuous upward velocity of 8
km/s will
A) escape from Earth.
B) be unable to escape Earth.
C) eventually maintain a fixed orbit around Earth.
The Schrdinger equation is most useful for describing
A) submicroscopic particles.
B) microscopic particles.
C) macroscopic particles.
D) none of the above
Twelve seconds after starting from rest, a freely-falling cantelope has a speed of
A) 10 m/s.
B) 50 m/s.
C) 100 m/s.
D) more than 100 m/s.
