Physics 110 Final Exam

You experience weightlessness

- in the absence of a supporting surface. - in a freely falling elevator. - momentarily when you step off a chair.

A fishing-boat captain returns to port saying, "It's rough out there with waves that are 4 meters high." He is probably talking of waves of amplitude

2 m

The amplitude of a wave is 1 meter. The crest-to-trough distance of the wave is

2 m

The force of Earth's gravity on a capsule in space increases as it comes closer. When the capsule moves to half its distance, the force toward Earth is then

4 times greater

For all paths of Earth satellites, one focus of the path is

Earths Center

If the sun were twice as massive

It's pull on Earth would double and the pull of Earth on the Sun would double

Acceleration is greater for a satellite when it is at the

Perigee(closest Point)

Which is the smallest particle?

Quark

A standing wave is likely produced when

a wave reflects upon itself

If an apple experiences a constant net force, it will have a constant

acceleration

Adiabatic processes occur in Earth's

all of the above

Every heat engine

all of the above

In the formation of a cloud, moist air rises and

all of the above

The Doppler effect is characteristic of

all of the above

The contained air in a closed, sealed can placed on a hot stove will undergo an increase in

all of the above

The vibrations of a longitudinal wave move

along the direction of wave travel

A force that determines the chemical properties of an atom is

an electrical force

Which has zero acceleration? An object

at rest, moving at constant velocity, in mechanical equilibrium

The vibrations of a transverse wave move

at right angles to the direction of wave travel

A red shift for light indicates that the light source is moving

away from you

It takes Neptune a longer time to orbit the Sun than Earth does because Neptune

both of these

Angular momentum is conserved for a satellite in

circular orbit; and elliptical orbit.

The kinetic energy of a planet is maximum when it is

closes

Our Moon in Earth orbit travels fastest when it is

closest

According to Kepler, the orbital period of a planet is directly proportional to the

cube of the planets average distance from the sun

As a parcel of air is swept upward, with no heat input or output, its temperature

decrease

When a parcel of air expands against the environment and no heat enters or leaves, its temperature

decrease

When a system does work without adding heat, the temperature of the system

decrease

If Earth's mass decreased to one-half its original mass with no change in radius, then your weight would

decrease to half

When the air of a fully-inflated party balloon quickly escapes, its temperature

drops

If an object is placed exactly halfway between Earth and the Moon, it would fall toward the

earth

A Doppler effect occurs when a source of sound moves

either of these

How far must one travel to escape Earth's gravitational field?

forget it, you cant travel far enough

Harry places a new air conditioner in the middle of his hot room, which when operating

further warms the room

The greater the temperature difference between input and output reservoirs of a heat engine, the

greater the efficiency

According to Newton, the greater the masses of interacting objects, the

greater the gravitational force between them

If the mass of a cart is quickly loaded to have twice the mass while a propelling force remains constant, the cart's acceleration

halves

An adiabatic process is characterized by the absence of

heat exhange

A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is the

heavy rock

According to Kepler, the line from the Sun to any planet sweeps out equal areas of space

in equal time intervals

If a non-rotating object has no acceleration, then we can say for certain that it is

in mechanical equilibrium

The direction of a gravitational field is

in the same direction as gravitational attraction.

As a parcel of air at high altitude sinks to a lower elevation with no heat input or output, its temperature

increase

If the mass of Earth somehow increased with no change in radius, your weight would

increase also

When you compress air with a tire pump, the air temperature in the tire

increases

An object with twice as much mass as another object has twice as much

inertia

If the net force on a cart is tripled, the cart's acceleration

is three times as much

When the potential energy of a satellite decreases

its kinetic energy correspondingly increases

If the Moon had twice as much mass and still orbits Earth at the same distance, ocean bulges on Earth would be

larger

Ideally, a ball is thrown up at an angle and lands downrange. Because of air resistance, the distance reached is

less

When you weigh yourself on a bathroom scale on a slight incline instead of a level surface, your weight reading on the scale will be

less

A weightless astronaut in an orbiting satellite is

like the satellite, pulled by Earth's gravitation

An object is thrown vertically into the air. In this case air resistance affects motion. Compared with its time for ascent, the time for its descent is

longer

The speed of an Earth satellite does NOT depend on its

mass

A node is a position of

minimum amplitude

The Moon does not crash into Earth because

moon has a sufficient tangential speed

A granite block is mostly empty space because the atoms in the granite are

mostly empty space themselves

Escape speed from the Moon is

much less than from Earth.

An Earth satellite in an elliptical orbit travels fastest when it is

nearest earth

Which of the following are electrically neutral?

neutrons

During an adiabatic compression of an ideal gas

no heat enters or leaves the gas

A ball rolled along a horizontal surface maintains a constant speed because

no horizontal force acts on it

A given amount of heat energy can be completely converted to mechanical energy in

none of the above

Which of these vary for satellites in circular orbits?

none of the above

The distance traveled by a wave during a single period is

one wavelenght

The force of Earth's gravity on a capsule in space will lessen as it moves farther away. If the capsule moves to twice its distance, the force toward Earth becomes

one-fourth

The tangential velocity of an Earth satellite is its velocity

parallel to the surface of earth

To totally convert a given amount of mechanical energy into heat is

possible

An element is distinct because of its number of

protons

Atomic number refers to the number of

protons in the nucleus

The period of an Earth satellite depends on the satellite's

radial distance from earth

Which of these is a transverse wave?

radio wave

As soon as a bowling ball rolls off the edge of a table its horizontal component of velocity

remains constant

When a star collapses to form a black hole, its mass

remains the same

Your hand is warmed when you blow on it with your mouth open, but when your lips are puckered so that air expands as you blow, your hand is

remains unchanged

Acceleration due to gravity on the Moon is less than on Earth, and the Moon is smaller than Earth. This means that compared to an Earth satellite, a satellite in close orbit about the Moon would travel

slower

The source of all waves is

something that vibrates

Which of these is a longitudinal wave?

sound

Wave interference occurs for

sound waves, light waves, and water waves

If you double the net force on an object, you'll double its

speed

If you drop a stone into a hole drilled all the way to the other side of Earth (neglect the molten core), the stone will

speed up until it gets to earth center

Earth's atmosphere gets most of its heat from the

sun

Which pulls on the oceans of Earth with a greater force?

sun

Your weight as measured on your bathroom scale is

the force due to gravity on you

A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if either, is greater?

the force on B

A light woman and a heavy man jump from an airplane at the same time and open their same-size parachutes at the same time. Which person will get to the ground first?

the heavy man

If you jounce up and down on a bathroom scale, what varies on the scale reading is

the normal force

A feather and a coin will have equal accelerations when falling in a vacuum because

the ratio of both the feathers and coin weight to mass is the same

After a rock thrown straight up reaches the top of its path and then falls a short distance, its acceleration is (neglect air resistance)

the same as at the top of it path

If the Sun collapsed to a black hole, Earth's gravitational attraction to it would be

the sames

The orbital path of a satellite has two focal points. When both focal points are together

the satellite path is a circle

Internal energy in thermodynamics is the same as

thermal energy

A blue shift for light indicates that the light source is moving

toward you

Tidal forces in general are the result of

unequal forces acting on different parts of a body

Nellie tosses a ball upward at an angle. Assuming no air resistance, which component of velocity changes with time?

vertical component

Escape speed from the Sun is

very much greater than for Earth

All waves have in common a

vibrating source

A volume of air that is compressed with no heat entering or leaving becomes

warmer

Inside a freely-falling elevator, you would have no

weight

The force required to maintain a constant velocity for an astronaut in free space is equal to

zero