Physics Final Review II Question Preview (ID: 47208)


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A circuit has a continuous path through which carge can flow from a voltage source to a device that uses electrical energy. What is the name of this type of circuit?
a) Short Circuit
b) Closed Circuit
c) Open Circuit
d) Circuit Schematic

A flashlight bulb with a potential differnece of 4.5 V across it has a resistance of 8 ohms. How much current is in the bulb filament?
a) 36 A
b) 9.4 A
c) 1.8 A
d) 0.56 A

In general sound travels faster through
a) Solids
b) Liquids
c) Gases
d) Empty Space

Which of the following is the tendency of an object to maintain its state of motion?
a) Acceleration
b) Inertia
c) Force
d) Velocity

When a car's veloicyt is positive and its acceleration is negative what is happening to the car's motion?
a) The car slows down
b) The car speeds up
c) The car travels at constant speed
d) The car remains at rest

As the temperature of a substance increases its volume tend to increase due to
a) Thermal equilibrium
b) Thermal expansion
c)
d)

In which of the following sentinces is work used in the scientific sense of the word?
a) Holding a heavy box requires a lot of work.
b) A scientist works on an experiment in a lab.
c) Sam and Rachel pushed hard, but they could not do work on the car.
d) Joun learned that shoveling snow is hard work.

A freight train rolls along a track with considerable momentum. If it rolls at the sam espeed bu thas 2x as much mass its momentum is
a) zero
b) doubled
c) quadrupled
d) unchanged

The difference between impulse and impact force involves the
a) distance the force acts
b) time the force acts
c) difference between acceleration and velocity
d) mass and its effect on resisting a change in momentum

A rifle recoils from firing a bullet. The speed of the rifle's recoil is small because the
a) Force against the rifle is smaller than the bullet
b) Momentum is mainly concentrated in the bullet
c) Rifle has more mass
d) Momentum of the rifle is smaller

A gain in speed each second for a freely-falling object is about
a) 0
b) 5 m/s
c) 10 m/s
d) depends on intial speed

At one instant an object in dree fall is moving downward at 50 m/s. One second later its speed is about
a) 25 m/s
b) 50 m/s
c) 55 m/s
d) 60 m/s

An upright broom is easier to balance when the heavier end is
a) Nearest your hand
b) Highest, farthest from your hand
c) Same either way
d)

The rotational inertia of your leg is greater when your leg is
a) Straight
b) Bent
c) Same either way
d)

When water is turned on in a shower, the shower cutrain moves towards the water. This has to do with
a) Capillary action
b) Surface tension
c) Heat capacity
d) Pressure of a moving fluid

The lowest temperature possible in nature is
a) 0 degrees C
b) -273 degrees C
c) 4 K
d)

The first law of thermodynamics is a restatment of the
a) Principle of entropy
b) Law of heat addition
c) Carnot cycle
d) Conservation of energy

Entropy measures
a) temperature at constant pressure
b) temperature at constant volume
c) temperature as pressure increases
d) messiness

A wiggle in time is a
a) Vibration
b) Wave
c)
d)

The range of human hearing is from about
a) 10 to 10,000 Hz
b) 20 to 20,000 Hz
c) 40 to 40,000 Hz
d) Depends on the person

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