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 forces charges to move?
The electric field forces charges to move.
Entropy always increases.
The energy required to remove an electron or nucleon from a molecule.
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.


2. What is the energy equation if a force (friction) through a distance results in heat and thus a change in temperature?
KE=(3/2)kT where k is Boltzman's constant
KE=Work
It is the net force pointing towards the center.
Work


3. 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


4. What is the order of the visible range electromagnetic spectrum?
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
Sum of the torques equal zero.
Broad bright spot in the middle and alternating dark and light spots to the sides.
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.


5. 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


6. How is tube length and wavelength related for a tube that is closed on ONE end?
Only 1/4 wavelength fits in the tube. L=wavelength/4
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
The body is moving at a constant velocity
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.


7. When is a normal force present - what is its direction?
W = KE:final - KE:initial
When the body rests on a surface.
The centripetal force points along the radius towards the center of the circle.
V=Vo + at ...The word 'dropped' means no initial velocity.


8. What is electromagnetic induction?
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
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 where k is Boltzman's constant
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


9. What is the relationship between speed - frequency - and wavelength?
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
E=kq/R^2
wave speed = (wavelength)(frequency)
Power ... Power equals the change in energy over time.


10. 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.)
The charge on each capacitor.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Pgh ..thats ('rho')(gravity's acceleration)(height)


11. What is the relationship that describes the rate that work is done - or that energy is used?
Work by a system is negative when the gas contracts. (The volume decreases.)
Power ... Power equals the change in energy over time.
N/C
Velocity has a direction and speed does not have direction.


12. Under what conditions is mechanical work negative?
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.
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.
Work is positive when the force and displacement point in the same direction.
the refracted ray bends AWAY from the normal line.


13. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
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.
2(pi)R/T ...Circumference/Period
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
The release of an electron and antineutrino or the release of a positron and a neutrino.


14. S.I. unit of flux
It is the net force pointing towards the center.
Weber
Gamma
The longer the length of wire - the higher the resistance.


15. When are f - p - q - ho - hi - and M positive for mirrors?
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.
In front of the mirror - in the light.
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
When the object is beyond the focus for a concave mirror.


16. How is the centripetal force represented in a free body diagram?
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
Pascal
The bending of light
It is the net force pointing towards the center.


17. 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


18. How can you tell when an engine is a Carnot Engine?

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


19. What is the derived equation for the electric field in terms of q and r^2 ?

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


20. Define reflection
Diverging lenses have a negative focal length.
The bouncing of light
It is the net force pointing towards the center.
P=IV


21. 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


22. 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


23. Flow Rate
(Cross-sectional Area)(Velocity)
Alpha - Beta - and Gamma
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.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet


24. 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.
Alpha
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Diverging


25. What shape is a diverging lenses?
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
Lenses that are thinner in the middle than on the edges.
That the orbits of the electrons are like planets around the Sun.
When it is on the same side as the image?


26. When is sum of force (net force) zero?
'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.
When a body is moving at a constant velocity or not moving at all.
2(pi)R/T ...Circumference/Period
E=hf=hc/(wavelength)


27. What is the second law of thermodynamics?
Provided experimental proof of the wave property of light.
Entropy always increases.
Statistically speaking - energy flows from hot to cold.
Gamma


28. 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


29. How is the direction of the force on a current carrying wire calculated?
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
Open right hand rule
The electric field forces charges to move.


30. How is the force on a charged particle in a magnetic field creating the path calculated?
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
The nucleus
Work
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


31. What equation describes the distance that a dropped object falls 't' seconds after it started moving?

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


32. Pressure of an open container at the opening.
Atmospheric pressure
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
(n1)sin(theta1) = (n2)sin(theta2)
When a body's speed is changing.


33. S.I. Unit of electric force
system is the gas being studied. Environment is the surroundings outside the gas.
Newton
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 electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.


34. What do the period of pendulums and springs each depend on?
Joule
Vertical direction
Displacement
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


35. What is the path of a charged particle in a magnetic field?
The particle travels in a circle. Radius=momentum/qB
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
Initial velocity
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.


36. What is the area under any PV curve?

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


37. What is the potential energy of a charge in an electric field?
Resistance: R=R1+R2+R3+...
V=kq/R
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
When it is on the same side as the image?


38. What did Rutherford discover?
The nucleus
The release of an electron and antineutrino or the release of a positron and a neutrino.
The refracted light ray is bent 90°. (Parallel to the interface surface.)
The graph of force vs displacement


39. What is the strong force?
W=qV
THe force that holds the nucleus together.
(n1)sin(theta1) = (n2)sin(theta2)
Alpha - Beta - and Gamma


40. Which type of radiation has the lowest energy?
The nucleus
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
Alpha
N/C


41. What is an object placed when the distance between it and the mirror is positive?
Work of a system is equal to 1-Qc/Qh
In front of the mirror - in the light.
E=hf=hc/(wavelength)
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


42. What is mass energy equivalence?
Conservation of Energy ... because E=hf
Energy and mass are equated by E=mc^2.
A potential difference and a flow and energized charges.
Electric potential is the potential energy associated with the electric force F=qE


43. What is the relationship between power - voltage and current?
Concave
Velocity has a direction and speed does not have direction.
Lenses that are thinner in the middle than on the edges.
P=IV


44. What is Huygen's Principle?
Potential energy stored in gravity (PE = mgh)
Newton
Every point on a wave front is a secondary source.
When a body is moving at a constant velocity or not moving at all.


45. What does light absorption involve?
Newton
It is used in Lenz's Law to determine the change in flux of a conductor.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.


46. 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 bottom of the bowl?
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.
m=(rho)V
Force= Pressure/Area
The acceleration is towards the center. It is supplied by the normal force and points towards the center.


47. What is the difference between atomic number and atomic mass number?
The graph of force vs displacement
Q=0 because thermal energy is not transfered between the system and its surroundings
It is the time for 1/2 a substance to decay by radioactive processes.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


48. What is the work done on a charged particle by the magnetic field? Why?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Electric potential is the potential energy associated with the electric force F=qE
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)


49. What is the photoelectric effect?
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
W=qV
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.


50. What is an isotope?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
When the object is beyond the focus for a concave mirror.
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
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.