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AP Physics

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Electric force felt by a charge due to another charge.
The thicker the wire - the lower the resistance.
The motion of the molecules in gas.
Only 1/2 a wavelength fits in the tube. L=wavelength/2
F=kq1q2/R^2

2. State the significance of Young's Experiment.
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Provided experimental proof of the wave property of light.
The measure of the average kinetic energy of the molecules.

3. How is sum of force (net force) depicted in a free body diagram?
Diverging lenses have a negative focal length.
It is an arrow that DOES NOT touch the body. Recall that the net force is the answer when all the forces are added up.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
The work function is a minimum amount of energy needed to release a photon from a collection in the surface of a material. The ionization energy is the energy needed to release an electron from a single - free-floating - molecule. the ionization ener

4. How is tube length and wavelength related for a tube that is closed on ONE end?
Alpha - Beta - and Gamma
Only 1/4 wavelength fits in the tube. L=wavelength/4
The electron
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.

5. S.I. unit of magnetism
Tesla
Emf is the maximum available energy per charge at the terminal of a power source. Voltage is the actual available energy per charge at the terminals of a power source. Some energy is lost due to the source internal resistance.
Work is positive when the force and displacement point in the same direction.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.

6. When is the image negative for a lens?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
When it is on the same side as the image?
The higher the temperature the higher the resistance. They are proportional to each other.
Parallel. Because the plates are shared.

7. Which kind of mirror cannot magnify an image?
Convex
Conservation of Energy ... because E=hf
Diverging
F=kq1q2/R^2

8. What is the actual movement of charges - and how is it measured?
When it is on the 'dark' side of the mirror. Opposite the light.
Energy and mass are equated by E=mc^2.
The movement of charges is the current and it is measures by the number of charges per second at a point.
The release of a particle or photon from an UNSTABLE nucleus.

9. What is the area under the acceleration versus time graph?
Work of a system is equal to 1-Qc/Qh
N•m
W = KE:final - KE:initial
The CHANGE in velocity.

10. What is heat?
The graph of force vs displacement
The transfer of thermal energy
Ohm's Law: V=IR
frequency (Think of the color as not changing.)

11. What two things must be true for a positive magnification?
Work is positive when the force and displacement point in the same direction.
KE = (3/2)kT
(1) The image is larger than the object: ho>hi. (2) image is upright.
The release of an electron and antineutrino or the release of a positron and a neutrino.

12. What are the three types of radiation?
No image.
Alpha - Beta - and Gamma
Pascal
Energy and mass are equated by E=mc^2.

13. What does the pattern look like in a Young's Single Slit diffraction pattern?
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Bends waves around small objects and the interference of waves from a coherent sources.
F=kq1q2/R^2
Broad bright spot in the middle and alternating dark and light spots to the sides.

14. If you have two charges - and you double one charge and triple the other - and move them twice as far apart - what happens to the force of attraction / repulsion between them?

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15. What is the strong force?
THe force that holds the nucleus together.
Newton
Adding the momentum of all the bodies.
It is when a nucleon changes properties. Like a neutron changing into a proton.

16. Formula for work as a charged particle travels across two charged plates
W=qV
Joule
Weight ...w=mg
The energy required to remove an electron or nucleon from a molecule.

17. How must the mediums light is traveling through be arranged so that the condition for the critical angle can exist?
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The body is moving at a constant velocity
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
Displacement

18. What is the electric field's magnitude inside of a container made from an electrical CONDUCTOR?
Zero.
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Alpha

19. What is ionization energy and how does it compare to the work function?
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
Bernoulli's equation - Flow Rate = Volume/time
The work function is a minimum amount of energy needed to release a photon from a collection in the surface of a material. The ionization energy is the energy needed to release an electron from a single - free-floating - molecule. the ionization ener

20. Formula for the electric force felt by a charged particle in an electric field.
When a body is moving at a constant velocity or not moving at all.
The electron
F=qE
kg•m/s

21. What is mass energy equivalence?
Energy and mass are equated by E=mc^2.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Potential energy stored in gravity (PE = mgh)
Work is positive when the force and displacement point in the same direction.

22. Unit that means the same thing as Nm
The motion of the molecules in gas.
Joule
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Weber

23. How much work is the work done on an object moving in a circle? Why?
The nucleus
Zero. Because the displacement is perpendicular to the force (centripetal force.)
frequency (Think of the color as not changing.)
Sum of the torques equal zero.

24. How does thickness effect resistance?
E=V/d
Energy and mass are equated by E=mc^2.
The thicker the wire - the lower the resistance.
Impulse is the change in momentum

25. What is the energy equation if you see a height difference between two points in the problem?
Potential energy stored in gravity (PE = mgh)
Tesla
A1v1=a2v2
Lenses that are fatter in the middle than on the edges.

26. What is needed for electromagnetic induction to occur?
(1) The image is larger than the object: ho>hi. (2) image is upright.
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
The bouncing of light
Electromagnetic induction occurs when a conductor is moved through a magnetic field such that a component of the fields is perpendicular to the current;s direction.

27. Under what conditions is mechanical work positive?
Work is positive when the force and displacement point in the same direction.
No image.
Dark in the middle and alternating light and dark spots after that.
Tesla

28. Define diffraction
But placing more obstacles in the path of the charge's flow.
Displacement is zero because it is measured from equilibrium position. KE and velocity are at a maximum and it is the lowest point so PE due to gravity is at zero.
Bends waves around small objects and the interference of waves from a coherent sources.
(1) The image is larger than the object: ho>hi. (2) image is upright.

29. What is the energy of a photon?

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30. What does light absorption involve?
Ohm's Law: V=IR
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
KE = (3/2)kT
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.

31. Which kind of lens always has a virtual image?
Work by a system is positive when the gas expands. (The volume increases.)
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Power ... Power equals the change in energy over time.
Diverging

32. How can you tell when an engine is a Carnot Engine?

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33. What is implied when an object is not accelerating in the x direction?
The body is moving at a constant velocity
Convex
Entropy always increases.
Adding the momentum of all the bodies.

34. What is its impact on the first law of thermodynamics of an adiabatic process?
Open right hand rule
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Q=0 because thermal energy is not transfered between the system and its surroundings
The release of an energetic photon from an overly excited molecule.

35. What is the Bohr Model of the atom?
Only 1/4 wavelength fits in the tube. L=wavelength/4
V=Vo + at ...The word 'dropped' means no initial velocity.
That the orbits of the electrons are like planets around the Sun.
Obstacles in the path of the flow of charges.

36. What is the energy equation if you see a particle accelerated perpendicular to two charged plates - or the problem states that the particle is accelerated through a potential difference?

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37. How is the direction of the force on a current carrying wire calculated?
Open right hand rule
The refracted light ray is bent 90°. (Parallel to the interface surface.)
Impulse is the change in momentum
Alpha

38. What stays the same for resistors or capacitors in parallel?
Change in voltage across the resistor or capacitor.
Emf is the maximum available energy per charge at the terminal of a power source. Voltage is the actual available energy per charge at the terminals of a power source. Some energy is lost due to the source internal resistance.
The nucleus
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.

39. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
It is the net force pointing towards the center.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
Power ... Power equals the change in energy over time.
When the body rests on a surface.

40. How can total momentum be calculated?
The work function is a minimum amount of energy needed to release a photon from a collection in the surface of a material. The ionization energy is the energy needed to release an electron from a single - free-floating - molecule. the ionization ener
Parallel. Because the plates are shared.
Adding the momentum of all the bodies.
The engine's efficiency is 1-Tc/Th. It is defined by the temperature's in the reservoirs and not the thermal energy flowing from them.

41. What is the y intercept of the velocity time graph?
W=qV
The initial velocity - (Vo in the formulas)
The velocity is positive
The release of a particle or photon from an UNSTABLE nucleus.

42. What is the name given to the distance between the pivot point and applied perpendicular force?
According to Coulomb's Law - the new force is 6/4 times the old charge.
frequency (Think of the color as not changing.)
Moment arm
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)

43. What quantity ADDS for resistors in series?
The bouncing of light
E=hf=hc/(wavelength)
Zero.
Resistance: R=R1+R2+R3+...

44. When are f - p - q - ho - hi - and M positive for mirrors?
PV=nRT and PV=kT
When the object is beyond the focus for a concave mirror.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Dark in the middle and alternating light and dark spots after that.

45. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Vertical direction
Something other than zero.
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.

46. What do you know about two objects that are launched at different horizontal velocities?
It is when a nucleon changes properties. Like a neutron changing into a proton.
PV=nRT and PV=kT
They fall - vertically - the by the same amount in the same time.
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.

47. What is temperature?
The measure of the average kinetic energy of the molecules.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
F=qE
Watt

48. Formula for the electric field between a pari of charged plates.
E=V/d
The bouncing of light
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
When it is on the 'dark' side of the mirror. Opposite the light.

49. Which type of lenses have a POSITIVE focal length?
Dark in the middle and alternating light and dark spots after that.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Converging lenses have a positive focal length.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)

50. What is impulse?
Work is positive when the force and displacement point in the same direction.
Impulse is the change in momentum
Newton
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.