Term
| The force of friction on an object on a level floor that does not move when you push it is... |
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Definition
| equal to the force of your push |
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Term
| The mass of a sliding block is somehow tripled, and at the same time, the force applied on it is also tripled. How does its acceleration compare to its original acceleration? |
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Definition
| it remains the same as before |
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Term
| What is the acceleration of a falling object that has obtained terminal velocity? |
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Definition
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Term
| What best describes the relation between speed and velocity: |
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Definition
| velocity includes speed and direction of motion |
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Term
| A car is moving at 90 km/h and it rounds a corner, also at 90 km/h. Which is true? |
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Definition
| The car is accelerating and the car moves at constant velocity |
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Term
| What did Galileo discover about the speed of a ball rolling freely down an incline? |
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Definition
| it increases by the same amount each second |
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Term
If a moving car doubles its speed, which of the following are doubled?
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Definition
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Term
| An apple hanging from a limb has potential energy because of its height. If it falls, what becomes of this energy just before it hits the ground? |
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Definition
| it becomes nearly all kinetic energy |
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Term
| Which requires more work: |
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Definition
| lifting a 200 kg sack a distance of five meters. |
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Term
| Which remains the same for a 10 omhs and a 20 omhs resistor wired in series in a series circuit? |
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Definition
| the current through each resistor. |
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Term
| If the voltage impressed across a circuit is held constant while the resistance doubles, what change occurs in the current? |
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Definition
| it decreases to half its former value |
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Term
| What best describes the relationship between power, voltage and current? |
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Definition
| Power is voltage times current |
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Term
| Which of the following can be used to distinguish longitudinal waves from transverse waves? |
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Definition
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Term
| Interference is a property seen in... |
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Definition
| sound waves, waves in a slinky, light waves |
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Term
| Is diffraction more pronounced through a small opening or through a large opening? |
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Definition
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Term
| What produces an electromagnetic wave? |
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Definition
| vibrating electric charge |
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Term
| Which of the following can be used to distinguish between light and an radio wave? |
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Definition
| a radio wave has a smaller frequency than light |
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Term
| In which medium does light travel faster, air, or water? |
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Definition
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Term
| A device that converts mechanical energy to electrical energy is a... |
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Definition
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Term
| A transformer works best with... |
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Definition
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Term
| What is induced by the rapid alternation of an electric field? |
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Definition
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Term
| In a circuit with two resistors in series, the... |
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Definition
| current through each resistor must be the same |
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Term
| In a circuit with two resistors in parallel, the... |
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Definition
| voltage across each resistor must be the same |
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Term
| A wire carries a current of 2 Amps. In 10 seconds the total charge that passes through the wire is... |
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Definition
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Term
| A wire carries a current of 2 Amperes for 10 seconds. What is the net charge on the wire during that time? |
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Definition
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Term
| The electrons in a metal wire that forms part of an electrical circuit come from... |
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Definition
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Term
| Can an electron at rest in a magnetic field be set into motion by it? |
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Definition
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Term
| Can an electron at rest in an electric field be set into motion by it? |
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Definition
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Term
| How would an electron and a proton moving at the same speed in the same magnetic field behave compared to each other? |
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Definition
| They are deflected in opposite directions, but the electron is deflected more than the proton |
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Term
| Electromagnetic induction may be caused by: |
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Definition
| a sudden power surge in an electric circuit and moving a wire inside a magnetic field |
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Term
| When a magnet is plunged in and out of a coil of wire, voltage is induced in the coil. If the rate of the in-and-out motion is doubled, the induced voltage |
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Definition
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Term
| If instead the number of loops in the coil is doubled, the induced voltage |
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Definition
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Term
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Definition
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Term
| You move +2 C from 0 V to +120 V. How much work must you do? |
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Definition
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Term
| How much potential energy does the charge gain? |
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Definition
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Term
| Now you move -1 C through the same potential difference. What is the change in potential energy now? |
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Definition
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Term
| What is the speed of an electromagnetic wave that has a frequency of 10,000 Hz? |
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Definition
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Term
| Which of the following can be used to distinguish between light and an X-ray? |
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Definition
| An X-ray has smaller wavelength than light |
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Term
| What produces an electromagnetic wave |
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Definition
| Vibrating electric charge |
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Term
| An electromagnetic wave consists of |
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Definition
| Oscillating electric charge |
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Term
| The color of light with the lowest frequency is |
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Definition
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Term
| Two cars, one twice as heavy as the other, move down a hill at the same speed. Compared with the lighter car, the heavier car has |
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Definition
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Term
| A bug hits the windshield of a bus as it travels down the highway. Which experiences the greater change in momentum? |
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Definition
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Term
| For which kind of collision is momentum conserved? |
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Definition
| both inelastic and elastic |
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Term
| A hammer hits a nail into a block of wood. Identify the reaction force to this action. |
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Definition
| the nail pushing against the hammer |
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Term
| Superman, reknowned man of steel dashes into outer space to save the world from an incoming asteroid. He uses his super strength, capable of exerting force enough to lift the asteroid were it on the earth, to hurl the asteroid towards the sun. Which of the following most likely describes the resulting motion? |
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Definition
| Superman will be knocked back a bit when pushing the asteroid, but given his super strength, the asteroid will move forwards more. |
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Term
| Which has a greater momentum- a heavy truck at rest or a moving skate-board? |
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Definition
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Term
| Which requires more impulse? A ball that is caught, or the same ball, caught and then thrown back again? (Assume it is initially travelling at the same speed each time) |
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Definition
| the one that is caught and thrown back |
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Term
| Your friend says that the law of momentum conservation is violated when a ball rolls down a hill and gains momentum. Is this true or false? Why? |
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Definition
True: gravity is its external force and the ball accelerates
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Term
| What is the period of the second-had of a clock? |
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Definition
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Term
| What is the frequency of the second-hand of a clock? |
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Definition
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Term
| Which of the following contributes to the natural frequency of an object? |
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Definition
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Term
| Which of the following characterizes sound waves in air? |
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Definition
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Term
| the relationship between wave speed, wavelength and frequency is |
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Definition
| speed is frequency times wavelength |
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Term
| In what direction do the vibrations of a longitudinal wave occur, relative to the direction of travel of the wave? |
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Definition
| parallel to the direction of travel |
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Term
| Which of the following characterizes sound waves in air? |
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Definition
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Term
| the speed of an object is doubled. which of the following are true: |
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Definition
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Term
| A car going 15mph takes 10m to come to a stop. How far will the same car going 45mph take to stop, if the same force is applied on the brakes? |
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Definition
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Term
| Two identical cars going at the same speed, but in opposite directions collide head on and come to a stop. Which are conserved? |
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Definition
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Term
| What is it that a body having energy is capable of doing? |
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Definition
| Doing work on another object |
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Term
| A car is travelling on a smooth flat road and comes to a stop. The work done by the car in stopping |
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Definition
| is equal to the change in kinetic energy of the car |
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Term
| A car is lifted a certain distance in a service station and therefore has potential energy (PE) relative to the floor. If it were lifted twice as high, how much PE would it have? |
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Definition
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Term
| A car slows down as a result of air friction. Which is true? |
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Definition
| the car's kinetic energy decreases, heat is generated, and the energy of the car+road+air taken together is constant. |
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Term
| The work done by the car in stopping |
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Definition
| is equal to the change in the kinetic energy of the car. |
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Term
| the relationship between wave period and wave frequency is |
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Definition
| the period is the inverse of the frequency |
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Term
| two waves that meet at the same point in space |
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Definition
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Term
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Definition
| a point where a standing wave has zero displacement. |
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Term
| according to Galileo's (also Newton's) law of inertia, if we could somehow take way the gravitational force between a planet and the sun, the planet would |
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Definition
| move away from the sun in a straight line |
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Term
| What is the net force on an object pulled the right with 30 pounds and to the left with 40 pounds? |
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Definition
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Term
| Consider a book that weighs 20N at rest on a flat table. The support force felt by the book is |
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Definition
| 20 Newtons, provided by the table |
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Term
| Relative tom the distance of an object in front of a plane mirror, how far behind the mirror is the image? |
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Definition
| the same as the distance from object to mirror |
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Term
| What physical property of light is most responsible for the phenomenon of mirages: |
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Definition
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Term
| Which travels more slowly in glass--red light or violet? |
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Definition
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Term
| Polarization is a characteristic of |
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Definition
|
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Term
| is diffraction more pronounced through a small opening or through a large opening? |
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Definition
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Term
| How is the energy of a photon related to its vibrational frequency? |
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Definition
| the energy is proportional to the frequency |
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Term
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Definition
| a photon with an energy higher than an X-ray |
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Term
| What did the physicist Henri Becquerel discover about Uranium? |
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Definition
| it spontaneously emits X-rays |
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Term
| Consider a two-split interference experiment as studied in lab. As the distance between two slits increases, the pattern of fringes (bright and dark spots) that appear on a screen will |
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Definition
| decrease (spacing of pattern decreases) |
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Term
| As the wavelength of laser light shown on the slits, the increases pattern of fringes will |
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Definition
| increase (spacing of pattern increases) |
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Term
| Which of the following is evidence for the particle nature of light? |
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Definition
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Term
| Which has the highest energy quanta? |
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Definition
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Term
| The color of the peak frequency of the spectrum emitted by the "white-hot" black-body is actually |
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Definition
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