Semester 2 Physics Final Exam Review (Units 10-17)

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

Do electrons flow through insulators? (Unit 10: Electrostatics)

Yes

As a wave travels into a medium in which its speed increases, its wavelength would do what? (Unit 13: Waves)

increase

The greenish blue of ocean water is due mostly to absorption of what? (Unit 15: Light and Color)

infrared light

Electrons on the surface of a conductor will arrange themselves such that the electric field ________________________. (Unit 10: Electrostatics)

inside cancels to zero

Loudness of sound is most closely related to its ___________. (Unit 14: Sound)

intensity

Noise-cancelling devices such as jackhammer earphones make us of sound __________. (Unit 14: Sound)

interference

The phenomenon of beats is the result of sound ___________. (Unit 14: Sound)

interference

How are sound intensity and distance related? (Unit 14: Sound)

inversely by the square

When a wave reflects from the fixed end, the wave _________. (Unit 13: Waves)

inverts

What are the units of wave speed? (Unit 14: Sound)

m/s

What is the space surrounding a magnet known as? (Unit 12: Magnetism)

magnetic field

Like a gravitational field, an electric field has both _____ and _____. (Unit 10: Electrostatics)

magnitude, direction

In order for an object to feel a magnetic field it must be ____________. (Unit 12: Magnetism)

moving and charged

The magnetic field surrounding Earth is likely caused by ______________________. (Unit 12: Magnetism)

moving charges in the molten interior

A proton moving downward enters a region of space with magnetic field B which points right. In which direction is the force on the proton? (Unit 12: Magnetism)

out

Electric field lines point from _____ to _____. (Unit 10: Electrostatics)

positive, negative

The charge of a single electron is ____________. (Unit 11: Electric Circuits)

1.6E-19 Couloumbs

The distance between 2 adjacent antinodes is equal to what? (Unit 13: Waves)

1/2 wavelength

The time it takes light to travel across the orbit of Earth is about ___________. (Unit 15: Light and Color)

17 minutes

Moving electric charges are surrounded by what? (Unit 12: Magnetism)

Both magnetic and electric fields.

The magnetic field lines about a current-carrying wire form what? (Unit 12: Magnetism)

Circles

Roy G. BV is a common abbreviation for what? (Unit 15: Light and Color)

Colors of the visible spectrum.

What is it that travels at about the same speed of light in an electric circuit? (Unit 11: Electric Circuits)

Electric field

The electric current in a copper wire is normally composed of what? (Unit 11: Electric Circuits)

Electrons

What is the correct order of structures in increasing size? (Unit 12: Magnetism)

Electrons, Atoms, Magnetic domains, and Magnets

What are the units and definition of frequency? (Unit 14: Sound)

Hz, oscillations per sec

What is electric potential energy? And what units is it measured in? (Unit 10: Electrostatics)

It is energy per charge. It is measured in Volts (V).

What is a Volt (V) equal to? (Unit 10: Electrostatics)

Joule / Coulomb

How is light different from sound? (Unit 15: Light and Color)

Light can travel through a vacuum and sound cannot.

How can the speed of a wave be found? (Unit 13: Waves)

Multiply frequency by wavelength

To find the charge passing through a bulb in one second, if a current of 2A is passing through it, I would use: ________. (Unit 11: Electric Circuits)

Q = IT

What best describes the correct comparison of the strengths of the gravitational and electric force? (Unit 10: Electrostatics)

The electric force is much stronger.

Can charge flow through an insulator? (Unit 10: Electrostatics)

Yes

Do charges flow in a circuit? (Unit 11: Electric Circuits)

Yes

To receive an electric shock there must be __________. (Unit 11: Electric Circuits)

a difference in potential across part or all of your body

Electric charge will flow in an electric circuit when ___________. (Unit 11: Electric Circuits)

a potential difference exists

What is interference a characteristic of? (Unit 13: Waves)

all waves

The vibrations along a longitudinal wave move in a direction ____________________. (Unit 13: Waves)

along and parallel to the wave

When you buy a water pipe in a hardware store, the water isn't included. When you buy copper wire, electrons ___________________________. (Unit 11: Electric Circuits)

are already in the wire

For magnets, like poles repel each other and unlike poles _________________. (Unit 12: Magnetism)

attract each other

The earth's magnetic field most resembles a ________ magnet. (Unit 12: Magnetism)

bar

In the electric field surrounding a group of charged particles, field strength is greater where field lines are _______. (Unit 10: Electrostatics)

closest

When you double the voltage in a simple electric circuit, you double the __________. (Unit 11: Electric Circuits)

current

An electron moving out of the screen experiences a force to the left. The magnetic field is pointing __________. (Unit 12: Magnetism)

down

Electric potential is related to electric potential energy as _____________________________________________. (Unit 10: Electrostatics)

electric potential is the ratio of electric potential energy per charge

Light is what kind of energy? (Unit 15: Light and Color)

electromagnetic

What is light composed of? (Unit 15: Light and Color)

electromagnetic waves and particles called photons

An object that becomes positively charged means _______. (Unit 10: Electrostatics)

electrons have been removed

What does a wave transfer? (Unit 13: Waves)

energy

Compared to the huge force that attracts an iron tack to a strong magnet, the force that the tack exerts on the magnet is _______________. (Unit 12: Magnetism)

equally huge

The difference b/w DC and AC in electric currents is that DC charges ________________. (Unit 11: Electric Circuits)

flow in one direction

When the surface of a guitar is made to vibrate we say it undergoes ____________. (Unit 14: Sound)

forced vibration

If the frequency of a wave is doubled and if the speed remains constant, its wavelength is _________. (Unit 13: Waves)

halved

The potential energy of a compressed string and the potential energy of a charged object both depend on their _________________ and _______________. (Unit 10: Electrostatics)

locations in their respective fields, on the work done on them

The magnetic domains in a magnet produce a weaker magnet when the _____________. (Unit 12: Magnetism)

magnet is heated

When you tap various objects they produce characteristic sounds that are related to what? (Unit 14: Sound)

natural frequency

A magnetic force cannot act on an electron when it moves _____________________. (Unit 12: Magnetism)

parallel to the magnetic field lines

The frequency of a wave is the inverse of its _________. (Unit 13: Waves)

period

The time it takes a pendulum to swing to and fro is considered its ____________. (Unit 13: Waves)

period

A magnetic force acts most strongly on a current-carrying wire when it is ________________________. (Unit 12: Magnetism)

perpendicular to the magnetic field

The vibrations along a transverse wave move in a direction ____________________. (Unit 13: Waves)

perpendicular to the wave

When one side of an atom or molecule is slightly more positive (or negative) than the opposite side, we say the object is ________. (Unit 10: Electrostatics)

polarized

What is the main factor that affects the speed of a sound wave? (Unit 13: Waves)

properties of the medium

If you double both the current and voltage in a circuit, the power ______________. (Unit 11: Electric Circuits)

quadruples

Sound travels in air by a series of what? (Unit 14: Sound)

rarefactions

Photons of light that shine on glass may be ___________________. (Unit 15: Light and Color)

reflected, absorbed, or transmitted

An object's color is determined by the color of light it _______. (Unit 15: Light and Color)

reflects

If an object appears red, it ___________________. (Unit 15: Light and Color)

reflects red and absorbs all others

As a wave travels into a medium in which its speed increases, its frequency would do what? (Unit 13: Waves)

remain the same

When an object is set into vibration by a wave having a frequency that matches the natural frequency of the object, what occurs is _________________. (Unit 14: Sound)

resonance

What are the units and definition of the period of a wave? (Unit 14: Sound)

s, how long it takes for one complete oscillation

The redness of sunlight or sunset is due mostly to light that has not been what? (Unit 15: Light and Color)

scattered

The blueness of the daytime sky is due mostly to light _______. (Unit 15: Light and Color)

scattering

Sound travels faster in ____ compared to ____ ? (Unit 14: Sound)

solids , gases

Speed of sound varies with what? (Unit 14: Sound)

temperature

Thin layers of semiconducting material sandwiched together make up ___________ , which are used in almost all modern electronics. (Unit 10: Electrostatics)

transistors

Polarization occurs only for what kind of waves? (Unit 15: Light and Color)

transverse waves

The electric field is a ________. (Unit 10: Electrostatics)

vector

If the charge on a conductor is not moving, the electric field inside of a conductor is ______. (Unit 10: Electrostatics)

zero

The electric field inside of a conductor is ______. (Unit 10: Electrostatics)

zero

A wire experiences a magnetic field if ________. (Unit 12: Magnetism)

1. it carries a current 2. if it's at least perpendicular to the field 3. there is a magnetic field

A magnetic field can produce a voltage in a loop if _____________________. (Unit 12: Magnetism)

1. the magnetic field changes strength 2. the loop rotates within the field 3. the loop is removed from the field

The charge passing through a bulb in one second, if a current of 2A is passing through it, is equal to: _________. (Unit 11: Electric Circuits)

2 C

How fast does light travel? (Unit 15: Light and Color)

300 million m/s

If it takes 3 secs for light to travel to the moon and back, how far way is the moon? (Unit 15: Light and Color)

450 mill. meters

The solar radiation curve is what? (Unit 15: Light and Color)

A plot of brightness vs. frequency (or wavelength) of sunlight.

When the shadow of the moon falls on Earth we have what? (Unit 15: Light and Color)

A solar eclipse

What type of copper wire would you expect to have the least electric resistance? (Unit 11: Electric Circuits)

A thick, short wire

What is an area of force that surrounds an electric charge? (Unit 10: Electrostatics)

An electric field

What is a charged atom called? (Unit 10: Electrostatics)

An ion

The unit of charge is _______. (Unit 10: Electrostatics)

Coulomb (C)

F = kqq / d^2 is known as what? (Unit 10: Electrostatics)

Coulomb's Law

__________________ are the source of different colors that you see. (Unit 15: Light and Color)

Different wavelengths

Electric potential and electric potential energy are the same? (Unit 10: Electrostatics)

No

What are the regions of a standing wave that do not move called? (Unit 13: Waves)

Nodes

Which part of the electromagnetic spectrum travels fastest? (Unit 15: Light and Color)

None, all the same

What happens to the electric field inside the conducting sphere of a Van de Graff generator as it charges? (Unit 10: Electrostatics)

Nothing because the field is always zero.

Standing waves are the result of what? (Unit 13: Waves)

Overlapping in phase and out of phase

Frequency is the inverse of what? (Unit 14: Sound)

Period

What is not considered to charge an object? (Unit 10: Electrostatics)

Polarization


Kaugnay na mga set ng pag-aaral

Chapter 63 - Care of Patients with Problems of the Thyroid and Parathyroid Glands

View Set

Intro to Human Development Ch.5-7

View Set

COB 202 3,4,6 study questions Roeder

View Set

Foundations of Exercise Science Chapter 1

View Set