College Physics- Chapeter 1 and 2

Science, art, and religion normally need not contradict one another because
A) all three involve different domains.
B) choosing the right one means no need to heed the other two.
C) choosing religion and art means no need to heed science.
D) choosing science means no need to heed religion and art.

A) all three involve different domains.
(Science, Art, and Religion)

A truly educated person is knowledgeable about
A) science.
B) the arts.
C) religion.
D) all of these.

D) all of these
(Science, Art, and Religion)

Science and technology are
A) responsible for all the good in the world.
B) responsible for all the bad in the world.
C) actually one and the same.
D) fundamentally different from each other.

D) fundamentally different from each other.
(Science and Technology)

The most basic of the sciences of physics, chemistry, and biology is
A) physics.
B) chemistry.
C) biology.
D) none of these.

A) physics.
(Physics-the Basic Science)

Science is a body of knowledge that
A) describes order in nature.
B) is an ongoing human activity.
C) condenses knowledge into testable laws.
D) all of these.
E) none of these.

D) all of these.
(Scientific Measurements)

To a fair approximation, Early Greeks knew the A) size of Earth. B) size of the Moon. C) Earth-Moon distance.

D) all of these.
(Scientific Measurements)

When we see a half Moon in the sky, the lines between Earth, Moon, and Sun
A) are equal in length.
B) are parallel to one another.
C) form a right triangle.
D) all of these.

C) form a right triangle.
(Scientific Measurements)

Spots of sunlight on the ground cast through openings between leaves in trees above are actually
A) images of the Sun.
B) part of a solar eclipse.
C) due to refraction of sunlight.
D) all of these.

A) images of the Sun.
(Scientific Measurements)

A simple method of measuring the distance between the Earth and the Moon is to place in your line of sight to the Moon a
A) magnifying glass.
B) coin.
C) telescope.
D) meterstick.

B) coin.
(Scientific Measurements)

The safest way to view an image of the Sun is to use
A) a telescope.
B) binoculars.
C) a pinhole.
D) colored sunglasses.

C) a pinhole.
(Scientific Measurements)

The scientific method is most effective in
A) making hypotheses.
B) gaining, organizing, and applying new knowledge.
C) discovering new things.
D) making theories.
E) performing experiments.

B) gaining, organizing, and applying new knowledge. (Scientific Methods)

The synthesis of a large collection of information that contains well-tested and verified hypotheses about certain aspects of the world is known as a scientific
A) fact.
B) hypothesis.
C) law or principle.
D) theory.
E) none of these.

D) theory.
(Scientific Methods)

An educated scientific guess is a
A) hypothesis.
B) theory.
C) either of these
D) neither of these

A) hypothesis.
(Scientific Methods)

12) Facts in the field of science
A) are absolute.
B) are changeable.
C) mean very little.
D) are more important than theories.

B) are changeable.
(Scientific Methods)

14) A theory in the field of science is
A) an educated guess.
B) less than a fact.
C) a synthesis of a large body of well-tested knowledge.
D) unchangeable.

C) a synthesis of a large body of well-tested knowledge.
(Scientific Methods)

The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is
A) more than 10 N.
B) less than 10 N.
C) 10 N.

C) 10 N. (Equilibrium Rule)

A hockey puck sliding at constant velocity across the ice is
A) in equilibrium.
B) nearly in equilibrium.
C) is nowhere near being in equilibrium.
D) none of the above.

A) in equilibrium.
(Equilibrium Rule)

Burl and Paul have a total weight of 1300 N. The tensions in the supporting ropes that support their scaffold add to 1700 N. The weight of the scaffold itself must be
A) 300 N.
B) 400 N.
C) 500 N.
D) 600 N.

B) 400 N.
(Equilibrium Rule)

The net force acting on an insect falling downward at constant velocity is
A) zero.
B) the weight of the insect.
C) upward air resistance.
D) none of the above.

A) zero.
(Equilibrium Rule)

An object in mechanical equilibrium is an object
A) moving with constant velocity.
B) having no changes in velocity.
C) at rest.
D) all of the above.

D) all of the above
(Equilibrium Rule)

The equilibrium rule applies to
A) vector quantities.
B) quantities that are equal in magnitude.
C) scalar quantities.
D) any kind of quantities.

A) vector quantities.
(Equilibrium Rule)

The equilibrium rule, ΣF = 0, applies to
A) objects or systems at rest.
B) objects or systems in uniform motion in a straight line.
C) both of these.
D) neither of these.

C) both of these
(Equilibrium Rule)

The net force on any object in equilibrium is
A) zero.
B) equal to its weight.
C) less than its weight.
D) non-zero when motion is involved.

A) zero.
(Equilibrium Rule)

Inertia is defined as a
A) force.
B) property of matter.
C) change in motion.
D) none of the above.

B) property of matter.
(Galileo's Experiments)

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized
A) the acceleration of free fall.
C) the role of distance in describing motion.
D) none of the above.

B) rates of time.
(Galileo's Experiments)

If no external forces act on a moving object, it will
A) continue moving at the same speed.
B) move slower and slower until it finally stops.
C) come to an abrupt halt.
D) none of the above.

A) continue moving at the same speed.
(Galileo's Experiments)

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.

B) keep rolling if friction is absent.
(Galileo's Experiments)

A hockey puck sliding across the ice finally comes to rest because
A) it seeks its proper and natural state.
B) of friction.
C) that's just the way it is.

B) of friction.
(Galileo's Experiments)

A force is a vector quantity because it has both
A) magnitude and direction.
B) mass and velocity.
C) action and reaction counterparts.
D) speed and direction.

A) magnitude and direction.
(Net Force and Vectors)

Which of the following is a vector quantity?
A) area
B) volume
C) mass
D) none of the above

D) none of the above.
(Net Force and Vectors)

A tree stump is pulled northward by a 10-N force at the same time a 25-N force pulls it southward. The resultant force has a magnitude of
A) 0 N.
B) 15 N.
C) 25 N.
D) 150 N.

B) 15 N.
(Net Force and Vectors)

A block pulled to the left with 15 N and to the right with 5 N at the same time experiences a net force of
A) 5 N.
B) 10 N.
C) 15 N.
D) 20 N.

B) 10 N.
(Net Force and Vectors)

A pair of 10-N vectors at right angles to each other has a resultant of about
A) 10 N.
B) 14 N.
C) 20 N.
D) none of the above.

B) 14 N.
(Net Force and Vectors)

The resultant of a 40-N force at right angles to a 30-N force is
A) 30 N.
B) 40 N.
C) 50 N .
D) greater than 50 N.

C) 50 N
(Net Force and Vectors)

When Nellie Newton hangs by the ends of a rope draped over a large pulley, the tension in each supporting vertical strand is
A) half her weight.
B) equal to her weight.
C) twice her weight.
D) none of the above.

A) half her weight.
(Net Force and Vectors)

The amount of force needed to sustain motion of a rock in outer space is
A) a force equal to its weight.
B) a force less than its weight if friction is absent.
C) none of these.

C) none of these
(Newton's First Law)

When no forces act on moving objects their paths are normally
A) straight lines.
B) circles.
C) ellipses.
D) all of the above

A) straight lines.
(Newton's First Law)

If gravity between the Sun and Earth suddenly vanished, Earth would continue moving in
A) a curved path.
B) an outward spiral path.
C) an inward spiral path.
D) a straight-line path.

D) a straight-line path.
(Newton's First Law)

Which concept is being illustrated when a tablecloth is quickly yanked beneath dishes resting on a table?
A) equilibrium
B) friction
C) support force
D) inertia

D) inertia
(Newton's First Law)

A package falls off a truck that is moving at 30 m/s. Neglecting air resistance, the horizontal speed of the package just before it hits the ground is
A) zero.
B) less than 30 m/s but more than zero.
C) about 30 m/s.
D) more than 30 m/s.

C) about 30 m/s.
(Newton's First Law)

If your automobile runs out of fuel while driving, the engine stops. You don't come to an abrupt stop due to
A) inertia.
B) gravity.
C) resistance.
D) the principle of continuation.

A) inertia.
(Newton's First Law)

When a rocket ship gaining speed in outer space runs out of fuel, it
A) gains speed for a short time, then slows down to a constant velocity.
B) gains speed for a short time, slows down, and eventually stops.
C) no longer gains speed.

C) no longer gains speed.
(Newton's First Law)

A moving van with a stone lightly glued to the midpoint of its ceiling smoothly moves at constant velocity. When the glue gives way, the stone falls and hits the floor
A) ahead of the midpoint of the ceiling.
B) exactly below the midpoint of the ceiling.
C) behind the midpoint of the ceiling.
D) none of the above.

B) exactly below the midpoint of the ceiling.
(Newton's First Law)

While you are standing in the aisle of a bus, the driver suddenly makes a left turn. You lurch to the right due to
A) an unbalanced force.
B) your tendency to keep moving forward.
C) an equilibrium challenge.

C) an equilibrium challenge.
(Newton's First Law)

Tension is actually a force that tends to
A) stretch something.
B) compress something.
C) break something.
D) balance something.

A) stretch something.
(Newton's First Law)

The minimum number of forces that act on a book resting on a table is
A) 1.
B) 2.
C) 3.
D) 4.
E) none of the above.

B) 2
(Support Force)

The support force on a 10-N book at rest on a table is
A) slightly less than 10 N.
B) 10 N.
C) slightly greater than 10 N.
D) dependent on the position of the book.

B) 10 N.
(Support Force)

Jason weighs 150 N and sits on his big brother's shoulders. Big brother weighs 400 N. The support force supplied by the floor must be
A) 150 N.
B) 400 N.
C) 550 N.
D) more than 550 N.

550 N.
(Support Force)

When you stand at rest on a pair of bathroom scales, the reading on each scale
A) is half your weight.
B) equals your weight.
C) add up to equal your weight.

C) add up to equal your weight.
(Support Force)

Weigh yourself on a weighing scale and the scale shows your normal weight. If you carefully stand on tiptoes, the scale reading will be
A) slightly more.
B) slightly less.
C) about half as much.
D) no different.

D) no different.
(Support Force)

An 800-N man stands at rest on two-bathroom scales so that his weight is distributed evenly over both scales. The reading on each scale is
A) 200 N.
B) 400 N.
C) 800 N.
D) 1600 N.
E) none of the above.

B) 400 N.
(Support Force)

If you toss a coin straight upward while in a train moving at constant velocity, the coin will land
A) as if you were at rest.
B) in front of you.
C) in back of you.

A) as if you were at rest.
(The Moving Earth)

If you toss a coin straight upward in train that gains speed while the coin is in the air, the coin will land
A) as if you were at rest.
B) in front of you.
C) in back of you.

C) in back of you.
(The Moving Earth)

If you toss a coin straight upward in train that slows while the coin is in the air, the coin will land
A) as if you were at rest.
B) in front of you.
C) in back of you.

B) in front of you.
(The Moving Earth)

A bird sitting on the limb of a tree is moving about 30 km/s with respect to the Sun. If the bird takes 1 second to drop down to a worm below, the worm would be 30 km downrange from the bird when it reached the ground. This faulty reasoning is best countered with Newton's
A) law of inertia.
B) law of gravity.
C) laws of motion.
D) none of the above.

A) law of inertia.
(The Moving Earth)