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. Energy of a SINGLE photon
Obstacles in the path of the flow of charges.
E=hf
A potential difference and a flow and energized charges.
The measure of the average kinetic energy of the molecules.


2. What equation describes the speed of a dropped object 't' seconds after it started moving?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


3. Define reflection
The release of an electron and antineutrino or the release of a positron and a neutrino.
The bouncing of light
Obstacles in the path of the flow of charges.
PV=nRT and PV=kT


4. 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?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


5. How does the speed change when the pressure is decreased?
Speed ups
Displacement
Weber
They fall - vertically - the by the same amount in the same time.


6. Unit of electric field
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
N/C
E=hf=hc/(wavelength)
Initial velocity


7. What equation describes the speed in the y-direction of a projectile 't' seconds after it started moving?
Vy=Vyo + gt ...Watch the signs.
When it is on the same side as the image?
Broad bright spot in the middle and alternating dark and light spots to the sides.
The body is moving at a constant velocity


8. This is used to determine the speed of a fluid when the pipe slopes up or down.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


9. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Something other than zero.
Statistically speaking - energy flows from hot to cold.
The electron
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


10. What is the potential energy of a charge in an electric field?
It is the net force pointing towards the center.
V=kq/R
(mg)sin(angle)
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


12. What comprises beta radiation?
The release of an electron and antineutrino or the release of a positron and a neutrino.
When a body's speed is changing.
The electron
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.


13. What two things must be true for a positive magnification?
(1) The image is larger than the object: ho>hi. (2) image is upright.
Every point on a wave front is a secondary source.
2(pi)R/T ...Circumference/Period
(1) Straight through the vertex. (2) Parallel then through the primary focus.


14. What does light absorption involve?
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
Sum of the torques equal zero.
Resistance: R=R1+R2+R3+...
Q=0 because thermal energy is not transfered between the system and its surroundings


15. How must the mediums light is traveling through be arranged so that the condition for the critical angle can exist?
They fall - vertically - the by the same amount in the same time.
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 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.
Light must travel from more to less dense so the refracted ray can bend away from the normal.


16. The 'V' is (rho)Vg
The volume under water
THe force that holds the nucleus together.
ZERO
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.


17. A ball rolls inside a salad bowl. The ball is released along the top edge and rolls down before climbing to the same height on the opposite side of the bowl. What is the direction of the acceleration of the ball when it at the top edge of the bowl?
Pgh ..thats ('rho')(gravity's acceleration)(height)
That the orbits of the electrons are like planets around the Sun.
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.


18. What is ionization energy and how does it compare to the work function?
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
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
(1) The image is larger than the object: ho>hi. (2) image is upright.
kg•m/s


19. What are the three types of radiation?
Concave mirrors are converging mirrors.
Work of a system is equal to 1-Qc/Qh
Obstacles in the path of the flow of charges.
Alpha - Beta - and Gamma


20. What forces charges to move?
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
E=hf=hc/(wavelength)
The electric field forces charges to move.


21. S.I. unit of power
Potential difference is the change in energy of a charged particle divided by its charge.
PV=nRT and PV=kT
Statistically speaking - energy flows from hot to cold.
Watt


22. What is the y intercept of the velocity time graph?
Weight ...w=mg
The initial velocity - (Vo in the formulas)
x=Vo + ((1/2)g)sin(angle)t^2
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.


23. What is electromagnetic induction?
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
The charge on each capacitor.
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.


24. What causes resistance?
Alpha - Beta - and Gamma
Obstacles in the path of the flow of charges.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Weber


25. What happens at the critical angle?
Magnitude and direction
E=kq/R^2
The interaction between an oscillating electric magnetic fields that are oriented 90° to each other. It propagates indefinitely because the wave takes its own medium.
The refracted light ray is bent 90°. (Parallel to the interface surface.)


26. How is the magnitude of the force on a current carrying wire calculated?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


27. How do you find the number of neutrons in an atom?
E=V/d
Atomic mass number minus atomic number.
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
Diverging lenses have a negative focal length.


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


29. What is conservation of energy and what is its significance?
Impulse is the change in momentum
Vy=Vyo + gt ...Watch the signs.
Every point on a wave front is a secondary source.
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.


30. Define Refraction
KE=Work
Newton
The bending of light
When the body rests on a surface.


31. How does impulse relate to force?
Entropy always increases.
E=kq/r^2 This is the electric field's magnitude at a point in space.
Impulse is (force)(time)
In front of the mirror - in the light.


32. What is the relationship between speed - frequency - and wavelength?
The release of an energetic photon from an overly excited molecule.
The initial velocity - (Vo in the formulas)
Joule
wave speed = (wavelength)(frequency)


33. This is the gauge pressure when under water.
(rho)gh
Concave mirrors are converging mirrors.
A potential difference and a flow and energized charges.
Electric potential is the potential energy associated with the electric force F=qE


34. 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?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


35. What is the component of 'mg' parallel to a slope?
E=V/d
Potential energy stored in gravity (PE = mgh)
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
(mg)sin(angle)


36. What are 2 key differences between electric force and gravitational force?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


37. S.I. unit of centripetal force
Tesla
Newton
E=kq/r^2 This is the electric field's magnitude at a point in space.
The release of an energetic photon from an overly excited molecule.


38. S.I. unit of gravitational force
Newton
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
Vertical direction
Concave


39. What is force times the perpendicular distance?
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
Torque
Concave
The release of an energetic photon from an overly excited molecule.


40. Formula for the electric field between a pari of charged plates.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
E=V/d
Moment arm
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)


41. What is the area under the velocity time graph?
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
Adding the momentum of all the bodies.
Displacement


42. Average kinetic energy of an ideal gas's SINGLE molecule.
Vertical direction
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
The CHANGE in velocity.
KE = (3/2)kT


43. What direction controls time in falling body and projectile motion problems?
m^3/s
m=(rho)V
Vertical direction
Weber


44. Which type of lenses have a POSITIVE focal length?
The release of an electron and antineutrino or the release of a positron and a neutrino.
It is when a nucleon changes properties. Like a neutron changing into a proton.
Lenses that are fatter in the middle than on the edges.
Converging lenses have a positive focal length.


45. What is an isothermal process - and what is its impact on the first law of thermodynamics?
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
The PVT conditions change for a gas without changing the temperature.
The electron
W=qV


46. What is the derived equation for the ACCELERATION of gravity in terms of m and 'r' squared?
Impulse is the change in momentum
The velocity is positive
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
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.


47. Which type of lenses have a NEGATIVE focal length?
Displacement
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
Diverging lenses have a negative focal length.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


48. When light travels from MORE dense to LESS dense mediums - how does the refracted ray bend in relation to the normal line?
m^3/s
the refracted ray bends AWAY from the normal line.
Broad bright spot in the middle and alternating dark and light spots to the sides.
Moment arm


49. Describe the relationship between Qh - Qc - and W in a heat engine?
(n1)sin(theta1) = (n2)sin(theta2)
Work
Work of a system is equal to 1-Qc/Qh
Initial velocity


50. S.I. unit of Flow rate
N•m
It is when a nucleon changes properties. Like a neutron changing into a proton.
m^3/s
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14