# Shared Flashcard Set

FINAL
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135
Physics
06/03/2013

## Additional Physics Flashcards

Term
 a common source of wave motion is a...
Definition
 vibrating object
Term
 in a longitudinal wave the compression and rare fractions travel in...
Definition
 the same direction
Term
 the vibrating of a transverse wave move in a direction...
Definition
 at right angles to the direction of wave travel
Term
 wave interferrence occurs for..
Definition
 all of the above
Term
 the doppler effect is characteristic of...
Definition
 all of the above
Term
 a dopple effect occurs when a source of sound moves...
Definition
 either towards you or away from you.
Term
 for light, a red shift indicates that the light source is moving...
Definition
 away from you
Term
 the amplitude of a particular wave is 1 meter. the top to bottom distance of the disturbance is...
Definition
 2m
Term
 if you double the frequency of a vibrating object, its period...
Definition
 halves
Term
 a sound wave is a ....
Definition
 longitudinal wave
Term
 sound waves cannot travel in...
Definition
 a vacuum
Term
 which force binds atoms together to form molecules?
Definition
 electrical
Term
 in an electrically neutral atom the number of protons in the nucleus is equal to the number of...
Definition
 electrons that surround the nucleus.
Term
 a positive ion has more...
Definition
 protons than electrons.
Term
 to say that electrical force between charged is strongest when the charges are....
Definition
 close together
Term
 the electrical force between charges depends only on the charge's...
Definition
 magnitude and sepearation distance
Term
 superconductors are noted for their...
Definition
 absence of electrical resistance
Term
 two protons attract each other gravitationally and repel each other electrically. by far the greater force is...
Definition
 the electrical repulsion.
Term
 electrical potential, measure in volts, is the ration of electric energy to amount of electric....
Definition
 charge
Term
 a difference between electric forces and gravitational forces is that gravitational forces are not affected by...
Definition
 repulsive interaction
Term
 charge carries in a metal are electrons rather than protons because electrons are....
Definition
 loosely bound.
Term
 you can touch a 100,000 volt van de graaff generator wiht little harm because alothough the voltage is high, the relavtively small amount of charge means there is a relatively small amount of...
Definition
 energy
Term
 a proton and an electron are places in an electric field, which undergoes the greater acceleration?
Definition
 electron
Term
 electrons are made to flow in a wire when there is...
Definition
 a potential difference across its ends
Term
 an ampere is a unit of electrical..
Definition
 current
Term
 which statement is true?
Definition
 charge flows in a closed circuit.
Term
 electrons move in an electrical circuit...
Definition
 by interacting with an established electric field.
Term
 heat a copper wire and its electrical resistance...
Definition
 increases
Term
 a wire carrying a current is normally charged...
Definition
 not at all.
Term
 in an ac circuit, the electric field....
Definition
 changes magnitude and direction with time.
Term
 the primary source of electrons is an ordinary electrical circuit is...
Definition
 the electrical circuit itself.
Term
 alternating current is normally produced by a...
Definition
 generator
Term
 when two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is...
Definition
 less than the resistance of either lamp.
Term
 when two lamps are connected is series to a battery, the electrical resistance that the battery sense is...
Definition
 more than the resistance of either lamp.
Term
 a circuit breaker often serves the same purpose as a...
Definition
 fuse
Term
 the source of all magnetism is...
Definition
 moving electric charge
Term
 moving electric charges will interact wih...
Definition
 an electric field or a magnetic field.
Term
 if a steady magnetic field exerts a force on a moving charge, that force is directed....
Definition
 at right angles to the direction of the motion.
Term
 an iron rod becomes magnetic when....
Definition
 the net spins of its electrons are in the same direction
Term
 like kinds of magnetic poles repel while unlike kinds of magentic poles..
Definition
 attract.
Term
 several paper clips dangle from the north pole of the magnet. the induced pole in the bottom of the lower most paper clip is a....
Definition
 north pole
Term
 an iron nail is more strongly attracted to the..
Definition
 north or south pole-- no difference
Term
 magnetism is due to the motion of electrons as they...
Definition
 choices A and B are both..
Term
 magnetic domains normally occur in....
Definition
 iron
Term
 magnetic field lines about a current carrying wire....
Definition
 circle the wire in closed loops
Term
 the force on an electron moving in a magnetic field will be the largest when its direction is...
Definition
 perpendicular to the magnetic field direction
Term
 magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. the amount of force that magnet A exerts on magnet B is....
Definition
 exactly 100 N
Term
 compared to the huge force that attracts on iron tack to a storng magnet, the force that the tack exerts on the magnet is...
Definition
 equally huge
Term
 an electron is shot through a spot somewhere between the ends of a horseshoe magnet. the electron...
Definition
 direction has changed
Term
 outside a magnet, magnetic field lines are conventionally drawn from....
Definition
 north to south.
Term
 which force field can accelerate an electron, but never change its speed?
Definition
 magnetic field
Term
 which force field can increase a moving electron's speed?
Definition
 only an electric field
Term
 when there is a change in the magnetic field in a closed loop of wire....
Definition
 all of these.
Term
 when a bar magnet is thrust into a coil of copper wire, the coil tends to....
Definition
 repel the magnet as it enters.
Term
 voltage can be induced in a wire by...
Definition
 choices A and B and C are all correct.
Term
 the magnetic field strength inside a current carrying coil will be greater if the coil encloses a....
Definition
 rod of iron
Term
 if a magnet is pushed into a coil, voltage is induced across the coil. if the same magnet is pushed into a coil with twice the number of loops...
Definition
 twice as much voltage is induced
Term
 a device that transforms electrical energy to machanical energy is a....
Definition
 motor
Term
 a transformer actually transforms....
Definition
 voltage
Term
 transformers use ac so there will be the required....
Definition
 change in magnetic field for operation.
Term
 the output power of an ideal transformer is....
Definition
 equal to the input power.
Term
 disconnect a small voltage battery form a coil of many loops of wire and a large voltage is produced by....
Definition
 the sudden collapse in the magnetic field.
Term
 rapid change of a magnetic field induces....
Definition
 an electric field.
Term
 a step-up transformer increase....
Definition
 neither power or energy.
Term
 a certain transformer doubles input voltage. if the primary coil has 10 A of current, then the current in the secondary coil is...
Definition
 5 A
Term
 most of the waves in the electromagnetic spectrum are...
Definition
 invisible.
Term
 compared to radio waves, the velocity of visible light waves in a vacuum is....
Definition
 the same.
Term
 if an electric charge is shaken up and down...
Definition
 a magnetic field is created.
Term
 which of the following is fundamentally different from the others?
Definition
 sound waves.
Term
 compared to its average speed in air, the average speed of a beam of light in glass is....
Definition
 less.
Term
 materials generally become warmer when light is...
Definition
 absorbed by them
Term
 sunburns are produced by
Definition
 ultraviolet light.
Term
 a lunar eclipse occurs when...
Definition
 moon passes into the earth's shadow.
Term
 electromagnetic waves consist of....
Definition
 oscilicating electric and magnetic fields.
Term
 the source of all electromagnetic wave is....
Definition
 accelerating electric changes.
Term
 the sensation of color is seen when light falls on the eye's....
Definition
 cones
Term
 in the periphery of our vision, we are...
Definition
 sensitive to movement, but cannot see color.
Term
 which of the following cannot travel in a vacuum?
Definition
 a sound wave.
Term
 color depends on what characteristic of light?
Definition
 its frequency
Term
 the color of an opaque object is the same as the light that is....
Definition
 reflected
Term
 what color light is transmitted by a piece of blue glass?
Definition
 blue
Term
 the brightest color emitted by the sun is...
Definition
 yellow-green
Term
 which will warm up quicker in sunlight?
Definition
 a piece of colored glass
Term
 the sky is blue because air molecules in the sky act as tiny....
Definition
 resonators which scatter blue light.
Term
 a whitish sky is evidence that the atmosphere contains...
Definition
 a mixture of particle sizes.
Term
 a variety of sunset colors is evidence for a variety of....
Definition
 atmospheric particles
Term
 the greenish blue of water is evidence for the...
Definition
 absorption of red light
Term
 a blue object will appear black when illuminated with...
Definition
 yellow light.
Term
 if sunlight were green instead of white, the most comfortable color to wear on a hot day would be...
Definition
 green
Term
 light id emitted when....
Definition
 electron clouds of atoms are forced into oscillation
Term
 light will almost always travel from one place to another along a path of least...
Definition
 time
Term
 when light reflects form a surface, there is a change inits....
Definition
 none of these.
Term
 ninety five percent of light inident on a mirror is refelcted. how much light is reflected when three of these mirrors are arrange so light reflects from one after the other?
Definition
 86%
Term
 a mirage is a result of atmospheric....
Definition
 refraction.
Term
 refraction results form difference in light's...
Definition
 speed
Term
 light refracts when traveling form air into glass because light...
Definition
 travels slower in glass than in air.
Term
 the average speed of light is greatest in...
Definition
 red glass
Term
 the type of lens that spreads parallel light is a....
Definition
 diverging lens
Term
 a burning glass used to concentrate sunlight in a tiny spot is a...
Definition
 converging lens
Term
 the image of the "infinitely-far-away" sun produced by converging lens appears...
Definition
 at the focal point
Term
 chromatic aberration is a consequence of different colors in a lens having different...
Definition
 speeds.
Term
 different colors of light travel at differnt speeds in a transparent medium. in a vacuum, different colors of light travel at...
Definition
 the same speed
Term
 if you wish to spear a fish with a regular spear, you should compensate for refraction between the air and water and throw your spear....
Definition
 below the sighted fish
Term
 consider plane waves incident upon a barrier with a small opening. after passing through the opening, the waves...
Definition
 fan out.
Term
 diffraction is more pronounced through relatively...
Definition
 small openings
Term
 to perceive greater detail a dolphin emits sounds of..
Definition
 higher frequency
Term
 diffraction is a result of....
Definition
 interference
Term
 the highest frequency light of those below is....
Definition
 violet
Term
 the energy of a photon is related to...
Definition
 all of these.
Term
 an atom that absorbs a photon of a certain energy can then emit.....
Definition
 only a photon of the same or lower energy.
Term
 light is emitted when an electron...
Definition
 makes a transition to a lower energy level.
Term
 to say that energy levels in an atom are discrete is to say the energy levels are well defined and....
Definition
 separate form one another
Term
 some doubt pane airplane windows darken when the inner pane is rotated. the panes are...
Definition
 Polaroid filters
Term
 polarization is a property of....
Definition
 transverse waves
Term
 interference is a property of....
Definition
 all of these
Term
 which color of light carries the most energy per photon?
Definition
 violet
Term
 the variety of colors seen in a burning log comes from the variety of...
Definition
 electron transitions in various atoms
Term
 the greater proportion of energy immediately converted to heat rather than light occurs in...
Definition
Term
 discrete spectral lines occur when excitation takes place in a....
Definition
 gas
Term
 the dark lines in the sun's spectrum represent light that is....
Definition
 absorbed by the sun's atmosphere
Term
 astronomers can tell whether a star is approaching or receding from earth by....
Definition
 the doppler effect.
Term
 atoms can be excited by....
Definition
 all of these
Term
 compared to the energy put into a laser, the energy of the laser beam is....
Definition
 less
Term
 light from a laser
Definition
 all of these.
Term
 a certain object emits infrared waves. if it were to emit light waves instead, its temperature would have to be...
Definition
 higher.
Term
 the absorption of an infrared photon that excited an atom to emit a green photon....
Definition
 violates the law of energy conservation
Term
 the doppler effect from the back and forth motion of atoms in a glowing discharge tube tends to make the spectral lines slightly
Definition
 thicker
Term
 the photoelectric effect, the brighter the illuminating light on a photosensitive surface, the greater the...
Definition
 number of ejected electrons
Term
 in the photoelectric effect, the greater the frequency of the illuminating light, the greater the....
Definition
 maximum velocity of ejected electrons.
Term
 the photoelectric effect best demonstrates the...
Definition
 particle nature of light.
Term
 light behaves primarily as a particle when it...
Definition
 interacts with matter.
Term
 in the double-slit experiment with electrons, the electrons arrive at the screen in a...
Definition
 particle-like way with a pattern that is wave like.
Term
 the uncertainty principle applies not only to momentum and position, but also to energy and time. this statement is....
Definition
 true
Term
 according to the uncertainty primciple, the more we know about a particle's momentum, the less we know about its.....
Definition
 location
Term
 in the relationship E=hf for a photon emitted from an atom, the symbol E is used to represent the energy...
Definition
 both of these
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