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. What is the energy equation if you see a height difference between two points in the problem?
Vy=Vyo + gt ...Watch the signs.
Concave mirrors are converging mirrors.
Potential energy stored in gravity (PE = mgh)
The CHANGE in velocity.


2. Gauge Pressure

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3. What are the differences and similarities between transverse and longitudinal waves?

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4. What is the work done on a charged particle by the magnetic field? Why?
V - a Joule/Coulomb
The bouncing of light
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
The release of a Helium nuclei - 4 -2 He2+


5. How is tube length and wavelength related for a tube that is opened on both ends?
Only 1/2 a wavelength fits in the tube. L=wavelength/2
When the object is beyond the focus for a concave mirror.
V - a Joule/Coulomb
Lenses that are thinner in the middle than on the edges.


6. In a pendulum or spring - what are the displacement - velocity - PES - and K at maximum displacement?
Something other than zero.
This is the highest point of the swinging motion. PE is at a maximum. Displacement is the greatest from equilibrium. KE and Velocity are zero.
The movement of charges is the current and it is measures by the number of charges per second at a point.
Diverging


7. What is the difference between emf and voltage?
The charge on each capacitor.
The PVT conditions change for a gas without changing the temperature.
frequency (Think of the color as not changing.)
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.


8. The speed of a ball when it lands at the same height it was thrown from.
Initial velocity
F=qE
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Provided experimental proof of the wave property of light.


9. What is the direction of the centripetal acceleration?
m^3/s
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
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.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


10. Condition for no rotation
The motion of the molecules in gas.
Sum of the torques equal zero.
The body is moving at a constant velocity
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)


11. What is force times time?
m^3/s
Dark in the middle and alternating light and dark spots after that.
The release of an electron and antineutrino or the release of a positron and a neutrino.
Impulse


12. In uniform circular motion - how is tangential velocity calculated?
The graph of force vs displacement
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
2(pi)R/T ...Circumference/Period
But placing more obstacles in the path of the charge's flow.


13. What is the difference between a motor and a generator?
The release of an electron and antineutrino or the release of a positron and a neutrino.
Displacement
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
The light travels through the image.


14. What are three ways to increase the capacitance of a capacitor?
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Work done 'BY' the gas.
Work is the change in kinetic energy. Work transfers energy to and from a body
It is towards the center and downwards a little. It is the sum of the normal force perpendicular to the bowl and the weight downwards.


15. Force in terms of pressure
Tesla
Atmospheric pressure
Force= Pressure/Area
When a body is moving at a constant velocity or not moving at all.


16. What two things must be true for a positive magnification?
(1) The image is larger than the object: ho>hi. (2) image is upright.
Zero. Because the displacement is perpendicular to the force (centripetal force.)
V=kq/R
Vy=Vyo + gt ...Watch the signs.


17. What is an isotope?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
velocity
(rho)gh
Kinetic energy is conserved for an elastic collision and not for an inelastic collision. ELASTIC: m1v1 + m2v2 = m1v1'+m1v2': INELASTIC: m1v1 + m2v2 = (m1+m1)v


18. Formula for work as a charged particle travels across two charged plates
That the orbits of the electrons are like planets around the Sun.
W=qV
The CHANGE in velocity.
Atmospheric pressure


19. What does the term potential difference mean?
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
The release of a particle or photon from an UNSTABLE nucleus.
Potential difference is the change in energy of a charged particle divided by its charge.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.


20. S.I. unit of torque
Zero. Because the displacement is perpendicular to the force (centripetal force.)
The thicker the wire - the lower the resistance.
N•m
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.


21. What is an indication of a change in the internal energy?

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22. What is the order of the visible range electromagnetic spectrum?
The PVT conditions change for a gas without changing the temperature.
The volume under water
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
That the orbits of the electrons are like planets around the Sun.


23. What is the difference between reflection - refraction - and diffraction?
Reflection is the bouncing of waves. Refraction is the bending of waves. Diffraction bends waves around small objects and causes interference from a coherent sources.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Adding the momentum of all the bodies.
The bouncing of light


24. What is the energy equation for the change in temperature if it results from a loss in KE?

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25. The 'V' is (rho)Vg
N/C
The volume under water
PV=nRT and PV=kT
The electron


26. What comprises beta radiation?
E=hf=hc/(wavelength)
The release of an electron and antineutrino or the release of a positron and a neutrino.
Pascal
kg•m/s


27. Unit of electric field
F=kq1q2/R^2
N/C
The motion of the molecules in gas.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


28. What is the horizontal acceleration of projectiles?
The body is moving at a constant velocity
When the body rests on a surface.
It is towards the center and downwards a little. It is the sum of the normal force perpendicular to the bowl and the weight downwards.
ZERO


29. S.I. unit of pressure
Reflection is the bouncing of waves. Refraction is the bending of waves. Diffraction bends waves around small objects and causes interference from a coherent sources.
PV=nRT and PV=kT
Pascal
The light travels through the image.


30. What is electromagnetic induction?
Converging lenses have a positive focal length.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Force= Pressure/Area
E=V/d


31. What is the relationship between voltage - current and resistance?

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32. Which type of lenses have a POSITIVE focal length?
dU = zero. The change in temperature of the gas is zero.
Converging lenses have a positive focal length.
Watt
Potential difference is the change in energy of a charged particle divided by its charge.


33. In electrostatics - what takes the place of m and g in the formulae?

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34. Buoyancy
Force lifting a body when it is in a fluid.
The electron
m^3/s
It is when a nucleon changes properties. Like a neutron changing into a proton.


35. What is the Bohr Model of the atom?
kg•m/s
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
When it is on the 'dark' side of the mirror. Opposite the light.
That the orbits of the electrons are like planets around the Sun.


36. Average kinetic energy of an ideal gas's SINGLE molecule.
KE = (3/2)kT
When the body rests on a surface.
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.
Weight ...w=mg


37. Under what conditions is work by a system ( gas) negative?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
Work by a system is negative when the gas contracts. (The volume decreases.)
The particle travels in a circle. Radius=momentum/qB
Converging lenses have a positive focal length.


38. Pressure of an open container at the opening.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
No image.
A1v1=a2v2
Atmospheric pressure


39. When is the image negative for mirrors?

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40. What is implied when an object is not accelerating in the x direction?
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
The body is moving at a constant velocity
F=Bilsin(theta) ...F=Force (N) - B:=magnetic field (T) - i=current (A) - l=length of wire in the field (m) - theta is the acute angle between the field and current's directions.
The PVT conditions change for a gas without changing the temperature.


41. What is heat?
The transfer of thermal energy
F=qE
2(pi)R/T ...Circumference/Period
This is the highest point of the swinging motion. PE is at a maximum. Displacement is the greatest from equilibrium. KE and Velocity are zero.


42. What kind of capacitor circuit adds to find the total capacitance?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
Provided experimental proof of the wave property of light.
Parallel. Because the plates are shared.


43. Formula for the electric field at point in space for a single point charge.
Obstacles in the path of the flow of charges.
E=kq/R^2
V=Vo + at ...The word 'dropped' means no initial velocity.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


44. Flow Rate
The release of an electron and antineutrino or the release of a positron and a neutrino.
F=Bilsin(theta) ...F=Force (N) - B:=magnetic field (T) - i=current (A) - l=length of wire in the field (m) - theta is the acute angle between the field and current's directions.
The graph of force vs displacement
(Cross-sectional Area)(Velocity)


45. Which kind of lens always has a virtual image?
Diverging
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Speed ups
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.


46. Define reflection
Alpha
The particle travels in a circle. Radius=momentum/qB
The bouncing of light
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.


47. This is the gauge pressure when under water.
When a body is moving at a constant velocity or not moving at all.
Adding the momentum of all the bodies.
(1) The image is larger than the object: ho>hi. (2) image is upright.
(rho)gh


48. What is its impact on the first law of thermodynamics of an adiabatic process?
The release of a Helium nuclei - 4 -2 He2+
Q=0 because thermal energy is not transfered between the system and its surroundings
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
(1) Straight through the vertex. (2) Parallel then through the primary focus.


49. What doesn't change (speed - frequency - or wavelength) - when light moves from one medium to another?
Vy=Vyo + gt ...Watch the signs.
frequency (Think of the color as not changing.)
Kinetic energy is conserved for an elastic collision and not for an inelastic collision. ELASTIC: m1v1 + m2v2 = m1v1'+m1v2': INELASTIC: m1v1 + m2v2 = (m1+m1)v
A reflected ray's phase is changes by 180° when the ray is bounced as it tries to travel from a lower to higher index of refraction. It is also changed y 180° when it bounces off of shiny surfaces.


50. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
F=qE
Something other than zero.
Potential difference is the change in energy of a charged particle divided by its charge.
Speed ups