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. When is a normal force present - what is its direction?
The electron
When the body rests on a surface.
Impulse is the change in momentum
(Cross-sectional Area)(Velocity)


2. Describe the relationship between Qh - Qc - and W in a heat engine?
Concave
Work of a system is equal to 1-Qc/Qh
The electron
Pgh ..thats ('rho')(gravity's acceleration)(height)


3. What do batteries and generators produce?
Potential difference is the change in energy of a charged particle divided by its charge.
A potential difference and a flow and energized charges.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
But placing more obstacles in the path of the charge's flow.


4. What is the photoelectric effect?
Alpha - Beta - and Gamma
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.
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
Converging lenses have a positive focal length.


5. Formula for the electric field at point in space for a single point charge.
KE=(3/2)kT where k is Boltzman's constant
The measure of the average kinetic energy of the molecules.
E=kq/R^2
The motion of the molecules in gas.


6. What conditions are necessary to change the reflected ray's phase by 180°?

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


7. What does the term electric potential energy mean?
Impulse is the change in momentum
The bending of light
Electric potential is the potential energy associated with the electric force F=qE
The higher the temperature the higher the resistance. They are proportional to each other.


8. Define diffraction
Bernoulli's equation - Flow Rate = Volume/time
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Bends waves around small objects and the interference of waves from a coherent sources.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet


9. What is electromagnetic induction?
Joule
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Q=0 because thermal energy is not transfered between the system and its surroundings


10. What two entities comprise a vector?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Magnitude and direction
(1) Straight through the vertex. (2) Parallel then through the primary focus.
'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.


11. Force in terms of pressure
E=hf=hc/(wavelength)
frequency (Think of the color as not changing.)
Force= Pressure/Area
Alpha


12. The 'V' is (rho)Vg
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
Atomic mass number minus atomic number.
The volume under water


13. What is mass energy equivalence?
Atomic mass number minus atomic number.
The bouncing of light
That the orbits of the electrons are like planets around the Sun.
Energy and mass are equated by E=mc^2.


14. What is the difference between the variable 'q' and 'Q?'?

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


15. 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


16. Buoyancy
Force lifting a body when it is in a fluid.
2(pi)R/T ...Circumference/Period
Obstacles in the path of the flow of charges.
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.


17. What is work energy theorem and what is its significance?
The PVT conditions change for a gas without changing the temperature.
Work is the change in kinetic energy. Work transfers energy to and from a body
Q=0 because thermal energy is not transfered between the system and its surroundings
Joule


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

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


19. Unit of energy for electricity.
x=Vo + ((1/2)g)sin(angle)t^2
A displacement must occur. ( W=Fd)
Open right hand rule
V - a Joule/Coulomb


20. Which kind of mirror cannot magnify an image?
Newton
The movement of charges is the current and it is measures by the number of charges per second at a point.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Convex


21. What is the binding energy?
The energy required to remove an electron or nucleon from a molecule.
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.
(1) The image is larger than the object: ho>hi. (2) image is upright.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment


22. What is the impact on the first law of thermodynamics for an isothermal process?
The electric field forces charges to move.
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.
dU = zero. The change in temperature of the gas is zero.
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.


23. S.I. unit of flux
Weber
Velocity has a direction and speed does not have direction.
W=qV
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


24. Flow Rate
It is used in Lenz's Law to determine the change in flux of a conductor.
(Cross-sectional Area)(Velocity)
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Dark in the middle and alternating light and dark spots after that.


25. Condition for no rotation
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
The CHANGE in velocity.
Sum of the torques equal zero.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.


26. What does light absorption involve?
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
Pgh ..thats ('rho')(gravity's acceleration)(height)
When the object is beyond the focus for a concave mirror.
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.


27. What shape is a diverging lenses?
(1) Straight through the vertex. (2) Parallel then through the primary focus.
Force lifting a body when it is in a fluid.
Lenses that are thinner in the middle than on the edges.
Convex


28. What is its impact on the first law of thermodynamics of an adiabatic process?
A displacement must occur. ( W=Fd)
Statistically speaking - energy flows from hot to cold.
Q=0 because thermal energy is not transfered between the system and its surroundings
Newton


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

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


30. Formula for the electric force felt by a charged particle in an electric field.
Q=0 because thermal energy is not transfered between the system and its surroundings
Only 1/4 wavelength fits in the tube. L=wavelength/4
F=qE
Bends waves around small objects and the interference of waves from a coherent sources.


31. S.I. Unit of electric force
The CHANGE in velocity.
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.
Newton
The centripetal force points along the radius towards the center of the circle.


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

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


33. Which kind of mirror can show a real image?
The release of a Helium nuclei - 4 -2 He2+
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
Concave
Only 1/2 a wavelength fits in the tube. L=wavelength/2


34. How much work is the work done on an object moving in a circle? Why?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Every point on a wave front is a secondary source.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Atomic mass number minus atomic number.


35. How is the force on a charged particle in a magnetic field creating the path calculated?
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
The thicker the wire - the lower the resistance.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
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.


36. What is force times the perpendicular distance?
Torque
No image.
Newton
It is the time for 1/2 a substance to decay by radioactive processes.


37. What is the direction of the centripetal acceleration?
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
The PVT conditions change for a gas without changing the temperature.


38. When light travels from MORE dense to LESS dense mediums - how does the refracted ray bend in relation to the normal line?
the refracted ray bends AWAY from the normal line.
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Atmospheric pressure
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.


39. Define mass in terms of density.
'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.
Light must travel from more to less dense so the refracted ray can bend away from the normal.
m=(rho)V
The release of a particle or photon from an UNSTABLE nucleus.


40. What causes radioactivity?
E=V/d
The electric field forces charges to move.
Bends waves around small objects and the interference of waves from a coherent sources.
The release of a particle or photon from an UNSTABLE nucleus.


41. What conservation law dictates that the frequency of light cannot change as it travels between mediums?
The motion of the molecules in gas.
P=IV
Work is positive when the force and displacement point in the same direction.
Conservation of Energy ... because E=hf


42. 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
When the body rests on a surface.
Alpha - Beta - and Gamma
Only 1/2 a wavelength fits in the tube. L=wavelength/2


43. What is temperature?
The measure of the average kinetic energy of the molecules.
Light must travel from more to less dense so the refracted ray can bend away from the normal.
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.
The light travels through the image.


44. What is the energy equation if you see a height difference between two points in the problem?
g=zero so h=(Vyo)t
Potential energy stored in gravity (PE = mgh)
The electric field forces charges to move.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)


45. Which type of radiation has the highest energy?
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Vertical direction
Gamma
Joule


46. Electric force felt by a charge due to another charge.
F=kq1q2/R^2
The nucleus
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
frequency (Think of the color as not changing.)


47. Give an example of a transverse and a longitudinal wave.

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


48. S.I. unit of frictional force
Newton
Obstacles in the path of the flow of charges.
Weight ...w=mg
N/C


49. S.I. unit of torque
N•m
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Only 1/2 a wavelength fits in the tube. L=wavelength/2
(n1)sin(theta1) = (n2)sin(theta2)


50. What is the general equation for motion down a slope and how does it change if the object is going up the slope?
x=Vo + ((1/2)g)sin(angle)t^2
ZERO
Joule
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.