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 equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
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.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
When a body's speed is changing.


2. Which type of lenses have a NEGATIVE focal length?
Energy and mass are equated by E=mc^2.
Diverging lenses have a negative focal length.
Gamma
P=IV


3. What is work energy theorem and what is its significance?
Work is the change in kinetic energy. Work transfers energy to and from a body
Work of a system is equal to 1-Qc/Qh
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.


4. Under what conditions is work by a system ( gas) negative?
Impulse is the change in momentum
The centripetal force points along the radius towards the center of the circle.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Work by a system is negative when the gas contracts. (The volume decreases.)


5. How length effect resistance?
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
That the orbits of the electrons are like planets around the Sun.
The longer the length of wire - the higher the resistance.
V - a Joule/Coulomb


6. What are three ways to increase the capacitance of a capacitor?
Convex
The motion of the molecules in gas.
It is used in Lenz's Law to determine the change in flux of a conductor.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.


7. What shape is a diverging mirror?
convex mirrors are diverging mirrors.
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
kg•m/s
Electric potential is the potential energy associated with the electric force F=qE


8. What is the relationship between power - voltage and current?
The release of a Helium nuclei - 4 -2 He2+
P=IV
Magnitude and direction
convex mirrors are diverging mirrors.


9. S.I. unit of gravitational force
Newton
Weight ...w=mg
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.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.


10. What comprises beta radiation?
velocity
system is the gas being studied. Environment is the surroundings outside the gas.
Concave
The release of an electron and antineutrino or the release of a positron and a neutrino.


11. S.I. unit of frictional force
Joule
Newton
The PVT conditions change for a gas without changing the temperature.
When it is on the same side as the image?


12. What is the difference between elastic and inelastic collisions? State the relevant equations for each.

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13. When is the image negative for a lens?
Work by a system is positive when the gas expands. (The volume increases.)
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
A change in the gas' temperature.
When it is on the same side as the image?


14. What is heat?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
The transfer of thermal energy
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.


15. Formula for work by a car that changes speed on a horizontal road.
Pascal
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
V=Vo + at ...The word 'dropped' means no initial velocity.
W = KE:final - KE:initial


16. What is impulse?
Impulse is the change in momentum
Work is positive when the force and displacement point in the same direction.
When it is on the same side as the image?
Tesla


17. Unit of electric field
The refracted light ray is bent 90°. (Parallel to the interface surface.)
F=kq1q2/R^2
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
N/C


18. S.I. Unit of electric force
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
(rho)gh
Statistically speaking - energy flows from hot to cold.
Newton


19. What is the order of the electromagnetic spectrum?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
the refracted ray bends AWAY from the normal line.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
The light travels through the image.


20. State the significance of Young's Experiment.
Provided experimental proof of the wave property of light.
Force lifting a body when it is in a fluid.
Potential energy stored in gravity (PE = mgh)
Weight ...w=mg


21. What is the 1st law of thermodynamics as applied to gases?
Power ... Power equals the change in energy over time.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
The particle travels in a circle. Radius=momentum/qB
Vy=Vyo + gt ...Watch the signs.


22. In a pendulum or spring - what are the displacement - velocity - PES - and K at maximum displacement?
When the object is beyond the focus for a concave mirror.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
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.
Only 1/4 wavelength fits in the tube. L=wavelength/4


23. What two things must be true for a positive magnification?
(1) The image is larger than the object: ho>hi. (2) image is upright.
Joule
The nucleus
The light travels through the image.


24. When is sum of force (net force) NOT zero?

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25. S.I. unit of every kind of energy
Joule
Resistance: R=R1+R2+R3+...
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
Potential difference is the change in energy of a charged particle divided by its charge.


26. What is the difference between reflection - refraction - and diffraction?
When the object is beyond the focus for a concave mirror.
THe force that holds the nucleus together.
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.
Work is the change in kinetic energy. Work transfers energy to and from a body


27. How is sum of force (net force) depicted in a free body diagram?
In front of the mirror - in the light.
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.
No image.
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.


28. 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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29. What is temperature?
'm' is replaced by 'q -' and 'g' is replaced by 'E.' W=mg is replaced by F=qE. The second formula describes the force on a charged particle in uniform electric field.
The measure of the average kinetic energy of the molecules.
The initial velocity - (Vo in the formulas)
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.


30. Condition for no rotation
Sum of the torques equal zero.
Lenses that are fatter in the middle than on the edges.
g=zero so h=(Vyo)t
The electric field forces charges to move.


31. What is implied when an object is not accelerating in the x direction?
The body is moving at a constant velocity
The nucleus
Newton
V - a Joule/Coulomb


32. Mathematically what does centripetal force represent and how is centripetal force calculated?

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33. When is a normal force present - what is its direction?
Newton
2(pi)R/T ...Circumference/Period
Initial velocity
When the body rests on a surface.


34. What is the relationship between energy - frequency - and wavelength in any wave?
(Cross-sectional Area)(Velocity)
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
E=hf=hc/(wavelength)
Work of a system is equal to 1-Qc/Qh


35. What are the three types of radiation?
Alpha - Beta - and Gamma
THe force that holds the nucleus together.
Lenses that are fatter in the middle than on the edges.
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.


36. Define mass in terms of density.
The new force is 2/4 or 1/2 times the old force. ...Because the force of gravity varies directly with the masses and inverse squared to the distance apart.
KE = (3/2)kT
m=(rho)V
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


37. What causes resistance?
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
W=qV
Obstacles in the path of the flow of charges.
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.


38. How must the mediums light is traveling through be arranged so that the condition for the critical angle can exist?
Bernoulli's equation - Flow Rate = Volume/time
Light must travel from more to less dense so the refracted ray can bend away from the normal.
Obstacles in the path of the flow of charges.
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.


39. What is mass energy equivalence?
Energy and mass are equated by E=mc^2.
Impulse
Resistance: R=R1+R2+R3+...
That the orbits of the electrons are like planets around the Sun.


40. How does impulse relate to force?
Initial velocity
Impulse is (force)(time)
g=zero so h=(Vyo)t
Work by a system is positive when the gas expands. (The volume increases.)


41. What is the actual movement of charges - and how is it measured?
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.
kg•m/s
Bends waves around small objects and the interference of waves from a coherent sources.
The movement of charges is the current and it is measures by the number of charges per second at a point.


42. What is the area under any PV curve?

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43. What are the two rules for ray tracing in lenses that work all the time?
Work done 'BY' the gas.
Vy=Vyo + gt ...Watch the signs.
(1) Straight through the vertex. (2) Parallel then through the primary focus.
Bends waves around small objects and the interference of waves from a coherent sources.


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

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45. What is force times time?
the refracted ray bends TOWARDS the normal line.
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.
The velocity is positive
Impulse


46. What is an isothermal process - and what is its impact on the first law of thermodynamics?
The PVT conditions change for a gas without changing the temperature.
Vertical direction
Adding the momentum of all the bodies.
E=V/d


47. What shape is a converging mirrors?
The longer the length of wire - the higher the resistance.
V=Vo + at ...The word 'dropped' means no initial velocity.
Concave mirrors are converging mirrors.
Entropy always increases.


48. What quantity ADDS for resistors in series?
Provided experimental proof of the wave property of light.
m=(rho)V
Work done 'BY' the gas.
Resistance: R=R1+R2+R3+...


49. What is force times the parallel diplacement?
Work
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
F=kq1q2/R^2
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.


50. What is ionization energy and how does it compare to the work function?
(rho)gh
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
Diverging lenses have a negative focal length.
Vertical direction