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 is transmutation?
The bouncing of light
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
It is when a nucleon changes properties. Like a neutron changing into a proton.
Work is the change in kinetic energy. Work transfers energy to and from a body


2. S.I. Unit of electric force
E=hf=hc/(wavelength)
Newton
A displacement must occur. ( W=Fd)
convex mirrors are diverging mirrors.


3. What is implied when an object is not accelerating in the y direction?
g=zero so h=(Vyo)t
Electric potential is the potential energy associated with the electric force F=qE
Work is positive when the force and displacement point in the same direction.
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.


4. Under what conditions is work by a system ( gas) positive?
The volume under water
V - a Joule/Coulomb
Work by a system is positive when the gas expands. (The volume increases.)
Newton


5. What is the Bohr Model of the atom?
That the orbits of the electrons are like planets around the Sun.
E=hf
KE = (3/2)kT
Statistically speaking - energy flows from hot to cold.


6. What is the strong force?
THe force that holds the nucleus together.
m=(rho)V
(n1)sin(theta1) = (n2)sin(theta2)
The transfer of thermal energy


7. What is Huygen's Principle?
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Every point on a wave front is a secondary source.
Velocity has a direction and speed does not have direction.
W=qV


8. S.I. unit of gravitational force
Tesla
frequency (Think of the color as not changing.)
Newton
Q=0 because thermal energy is not transfered between the system and its surroundings


9. What comprises gamma decay?
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
The release of an energetic photon from an overly excited molecule.
The CHANGE in velocity.
Displacement


10. Under what conditions is heat positive?

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


11. What causes resistance?
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
Only 1/2 a wavelength fits in the tube. L=wavelength/2
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.


12. In a pendulum or spring - what are the displacement - velocity - PES - and K at maximum displacement?
The movement of charges is the current and it is measures by the number of charges per second at a point.
The volume under water
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.
The electron


13. When are f - p - q - ho - hi - and M positive for mirrors?
The CHANGE in velocity.
2(pi)R/T ...Circumference/Period
E=V/d
When the object is beyond the focus for a concave mirror.


14. What do the period of pendulums and springs each depend on?
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Convex
The centripetal force points along the radius towards the center of the circle.
Power ... Power equals the change in energy over time.


15. The speed of a ball when it lands at the same height it was thrown from.
E=hf
When the object is beyond the focus for a concave mirror.
That the orbits of the electrons are like planets around the Sun.
Initial velocity


16. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
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.
Displacement
N/C
The acceleration is towards the center. It is supplied by the normal force and points towards the center.


17. What kind of mirror has a positive focus?
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Concave
A displacement must occur. ( W=Fd)
Converging lenses have a positive focal length.


18. Unit of energy for electricity.
V - a Joule/Coulomb
A displacement must occur. ( W=Fd)
'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.
It is used in Lenz's Law to determine the change in flux of a conductor.


19. Electric force felt by a charge due to another charge.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
F=kq1q2/R^2
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.
The transfer of thermal energy


20. 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


21. Which kind of mirror cannot magnify an image?
Convex
The centripetal force points along the radius towards the center of the circle.
That the orbits of the electrons are like planets around the Sun.
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


22. Define Snell's law.
But placing more obstacles in the path of the charge's flow.
The longer the length of wire - the higher the resistance.
Vertical direction
(n1)sin(theta1) = (n2)sin(theta2)


23. What two things must be true for a positive magnification?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
A1v1=a2v2
Resistance: R=R1+R2+R3+...
(1) The image is larger than the object: ho>hi. (2) image is upright.


24. How is the direction of the force on a current carrying wire calculated?
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Open right hand rule
The initial velocity - (Vo in the formulas)
Newton


25. What is the binding energy?
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Dark in the middle and alternating light and dark spots after that.
The energy required to remove an electron or nucleon from a molecule.
The electron


26. Average kinetic energy of an ideal gas's SINGLE molecule.
KE = (3/2)kT
Vertical direction
Bends waves around small objects and the interference of waves from a coherent sources.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


27. What is heat?
The centripetal force points along the radius towards the center of the circle.
The transfer of thermal energy
Current stays the same for resistors in series.
Energy and mass are equated by E=mc^2.


28. How is tube length and wavelength related for a tube that is opened on both ends?
The bouncing of light
Only 1/2 a wavelength fits in the tube. L=wavelength/2
It is the time for 1/2 a substance to decay by radioactive processes.
The volume under water


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. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
Newton
PV=nRT and PV=kT
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)


31. S.I. unit of every kind of energy
The velocity is positive
Joule
Impulse
Parallel. Because the plates are shared.


32. What equation describes the speed in the y-direction of a projectile 't' seconds after it started moving?
Vy=Vyo + gt ...Watch the signs.
Parallel. Because the plates are shared.
A change in the gas' temperature.
The energy required to remove an electron or nucleon from a molecule.


33. What do you do with any vector that is not on either the x or y axis?
wave speed = (wavelength)(frequency)
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Break it up into x and y components using trig - add up the components.
Impulse is the change in momentum


34. What is the relationship between power - voltage and current?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
P=IV
It is when a nucleon changes properties. Like a neutron changing into a proton.
(mg)sin(angle)


35. What is temperature?
The measure of the average kinetic energy of the molecules.
Adding the momentum of all the bodies.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
V - a Joule/Coulomb


36. What quantity stays the same for resistors in series?
Current stays the same for resistors in series.
The energy required to remove an electron or nucleon from a molecule.
A change in the gas' temperature.
Work by a system is positive when the gas expands. (The volume increases.)


37. Gauge Pressure

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


38. What is the difference between reflection - refraction - and diffraction?
E=V/d
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.
Concave mirrors are converging mirrors.
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.


39. What is an isotope?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
The release of an electron and antineutrino or the release of a positron and a neutrino.


40. Define mass in terms of density.
ZERO
Broad bright spot in the middle and alternating dark and light spots to the sides.
m=(rho)V
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.


41. Buoyancy
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
V=kq/R
Force lifting a body when it is in a fluid.
Newton


42. What is the area under the velocity time graph?
Work is positive when the force and displacement point in the same direction.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Displacement
The longer the length of wire - the higher the resistance.


43. What are the differences and similarities between transverse and longitudinal waves?

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


44. Work is the area under which curve?
The graph of force vs displacement
ZERO
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
The release of a Helium nuclei - 4 -2 He2+


45. State the significance of Young's Experiment.
Resistance: R=R1+R2+R3+...
When it is on the 'dark' side of the mirror. Opposite the light.
Provided experimental proof of the wave property of light.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


46. What is the law of reflection?
Weber
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
But placing more obstacles in the path of the charge's flow.


47. What is a key requirement in order for work to be done?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
2(pi)R/T ...Circumference/Period
Bernoulli's equation - Flow Rate = Volume/time
A displacement must occur. ( W=Fd)


48. Formula for work as a charged particle travels across two charged plates
Lenses that are thinner in the middle than on the edges.
The movement of charges is the current and it is measures by the number of charges per second at a point.
W=qV
Break it up into x and y components using trig - add up the components.


49. 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


50. 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