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 do the period of pendulums and springs each depend on?
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
dU = zero. The change in temperature of the gas is zero.
wave speed = (wavelength)(frequency)


2. What is Kinetic Energy lost and how is it calculated?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Current stays the same for resistors in series.
N•m
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)


3. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
Newton
Something other than zero.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial


4. What are the two rules for ray tracing in lenses that work all the time?
E=hf
(1) Straight through the vertex. (2) Parallel then through the primary focus.
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.
Pascal


5. When are f - p - q - ho - hi - and M positive for mirrors?
Joule
Newton
When the object is beyond the focus for a concave mirror.
Weber


6. Describe the relationship between Qh - Qc - and W in a heat engine?
Joule
The motion of the molecules in gas.
Work of a system is equal to 1-Qc/Qh
Speed ups


7. What is force times the parallel diplacement?
A change in the gas' temperature.
Work
It is used in Lenz's Law to determine the change in flux of a conductor.
Diverging


8. How is the direction of the force on a current carrying wire calculated?
Torque
Work is the change in kinetic energy. Work transfers energy to and from a body
Open right hand rule
Work is positive when the force and displacement point in the same direction.


9. What is the energy of a photon?

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


10. S.I. unit of pressure
When it is on the same side as the image?
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.
Pascal
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.


11. What is the second law of thermodynamics?
Statistically speaking - energy flows from hot to cold.
Work
W=qV
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


12. What happens at the critical angle?
The refracted light ray is bent 90°. (Parallel to the interface surface.)
(mg)sin(angle)
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
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.


13. How does the closed right hand rule work in electromagnetic induction?

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


14. What is the derived equation for the ACCELERATION of gravity in terms of m and 'r' squared?
The PVT conditions change for a gas without changing the temperature.
Lenses that are thinner in the middle than on the edges.
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
In front of the mirror - in the light.


15. Which kind of lens always has a virtual image?
Diverging
Vy=Vyo + gt ...Watch the signs.
The release of an energetic photon from an overly excited molecule.
Convex


16. What is the 1st law of thermodynamics as applied to gases?
The thicker the wire - the lower the resistance.
According to Coulomb's Law - the new force is 6/4 times the old charge.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
Q=0 because thermal energy is not transfered between the system and its surroundings


17. What is the energy equation if a force (friction) through a distance results in heat and thus a change in temperature?
The charge on each capacitor.
They fall - vertically - the by the same amount in the same time.
KE=Work
A displacement must occur. ( W=Fd)


18. Formula for the electric field at point in space for a single point charge.
F=kq1q2/R^2
E=kq/R^2
According to Coulomb's Law - the new force is 6/4 times the old charge.
convex mirrors are diverging mirrors.


19. Formula for work by a car that changes speed on a horizontal road.
Newton
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.
wave speed = (wavelength)(frequency)
W = KE:final - KE:initial


20. What are the two forms of the ideal gas law?
Convex
When it is on the 'dark' side of the mirror. Opposite the light.
PV=nRT and PV=kT
V=kq/R


21. How do you find the number of neutrons in an atom?
The thicker the wire - the lower the resistance.
Atomic mass number minus atomic number.
Power ... Power equals the change in energy over time.
Work of a system is equal to 1-Qc/Qh


22. What is the direction of the centripetal force?
Diverging
The centripetal force points along the radius towards the center of the circle.
The nucleus
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.


23. S.I. unit of Flow rate
m^3/s
But placing more obstacles in the path of the charge's flow.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Resistance: R=R1+R2+R3+...


24. What cause an electromagnetic wave - and what makes the wave propagate indefinitely even in a vacuum?
Work is positive when the force and displacement point in the same direction.
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
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.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)


25. How is the net work of a system (gas) measured?
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
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
The NET work BY a system is the area enclosed in a cycle on a PV diagram.


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

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


27. What is ionization energy and how does it compare to the work function?
When the object is beyond the focus for a concave mirror.
The light travels through the image.
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
Provided experimental proof of the wave property of light.


28. What comprises alpha radiation?
The release of a Helium nuclei - 4 -2 He2+
Newton
A change in the gas' temperature.
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.


29. What is the photoelectric effect?
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
Displacement
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.
Magnitude and direction


30. How length effect resistance?
W = KE:final - KE:initial
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The release of an electron and antineutrino or the release of a positron and a neutrino.
The longer the length of wire - the higher the resistance.


31. What is force times time?
Q=0 because thermal energy is not transfered between the system and its surroundings
Watt
Impulse
The longer the length of wire - the higher the resistance.


32. S.I. unit of power
The longer the length of wire - the higher the resistance.
Watt
The bending of light
Resistance: R=R1+R2+R3+...


33. What is the strong force?
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
THe force that holds the nucleus together.
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.
Work by a system is negative when the gas contracts. (The volume decreases.)


34. What is conservation of energy and what is its significance?
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Force lifting a body when it is in a fluid.
E=hf
The NET work BY a system is the area enclosed in a cycle on a PV diagram.


35. Which type of lenses have a NEGATIVE focal length?
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.
W=qV
The electron


36. Gauge Pressure

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


37. 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


38. What is the Bohr Model of the atom?
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.
That the orbits of the electrons are like planets around the Sun.
KE=Work
According to Coulomb's Law - the new force is 6/4 times the old charge.


39. What is electromagnetic induction?
The initial velocity - (Vo in the formulas)
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
The volume under water
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


40. What is the order of the electromagnetic spectrum?
The nucleus
Light must travel from more to less dense so the refracted ray can bend away from the normal.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
F=kq1q2/R^2


41. S.I. unit of centripetal force
A change in the gas' temperature.
Resistance: R=R1+R2+R3+...
m^3/s
Newton


42. What does light emission involve?
Newton
It is the time for 1/2 a substance to decay by radioactive processes.
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
The nucleus


43. What is the potential energy of a charge in an electric field?
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.
V=kq/R
Displacement
(1) The image is larger than the object: ho>hi. (2) image is upright.


44. If you double the mass of one planet - triple the mass of another - and move them twice as far apart - what happens to the force of attraction between them?
convex mirrors are diverging mirrors.
Work done 'BY' the gas.
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.
A displacement must occur. ( W=Fd)


45. 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.
Newton
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.


46. What shape is a converging mirrors?
the refracted ray bends TOWARDS the normal line.
Concave mirrors are converging mirrors.
Bends waves around small objects and the interference of waves from a coherent sources.
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.


47. What causes resistance?
Bends waves around small objects and the interference of waves from a coherent sources.
The graph of force vs displacement
Obstacles in the path of the flow of charges.
Work is positive when the force and displacement point in the same direction.


48. Formula for the electric field between a pari of charged plates.
Speed ups
The nucleus
When the object is beyond the focus for a concave mirror.
E=V/d


49. What is the general equation for motion down a slope and how does it change if the object is going up the slope?
In front of the mirror - in the light.
x=Vo + ((1/2)g)sin(angle)t^2
Weber
The NET work BY a system is the area enclosed in a cycle on a PV diagram.


50. What is the difference between reflection - refraction - and diffraction?
Ohm's Law: V=IR
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.
2(pi)R/T ...Circumference/Period
A potential difference and a flow and energized charges.