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 heat?
The transfer of thermal energy
THe force that holds the nucleus together.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
velocity


2. What cause an electromagnetic wave - and what makes the wave propagate indefinitely even in a vacuum?
Work done 'BY' the gas.
the refracted ray bends AWAY from the normal line.
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.
Torque


3. S.I. unit of centripetal force
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
Newton
V - a Joule/Coulomb
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


4. Unit of energy for electricity.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
V - a Joule/Coulomb


5. How is the centripetal force represented in a free body diagram?
KE=(3/2)kT where k is Boltzman's constant
It is the net force pointing towards the center.
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.
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.


6. Flow Rate
Something other than zero.
Pgh ..thats ('rho')(gravity's acceleration)(height)
(Cross-sectional Area)(Velocity)
Gamma


7. What is the 1st law of thermodynamics as applied to gases?
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
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.
It is when a nucleon changes properties. Like a neutron changing into a proton.
Convex


8. 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


9. 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


10. What is an isothermal process - and what is its impact on the first law of thermodynamics?
Converging lenses have a positive focal length.
The PVT conditions change for a gas without changing the temperature.
g=zero so h=(Vyo)t
x=Vo + ((1/2)g)sin(angle)t^2


11. What are the two forms of the ideal gas law?
PV=nRT and PV=kT
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Moment arm
The velocity is positive


12. 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?
W=qV
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.
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
Electric potential is the potential energy associated with the electric force F=qE


13. What is the area under the velocity time graph?
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.
Newton
(mg)sin(angle)
Displacement


14. What two entities comprise a vector?
2(pi)R/T ...Circumference/Period
Magnitude and direction
Ohm's Law: V=IR
P=IV


15. What comprises beta radiation?
The release of an electron and antineutrino or the release of a positron and a neutrino.
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.
The velocity is positive
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


16. How does a wires composition effect resistance?

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


17. Pressure of an open container at the opening.
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
convex mirrors are diverging mirrors.
Atmospheric pressure
Convex


18. What is temperature?
E=V/d
The measure of the average kinetic energy of the molecules.
Newton
Something other than zero.


19. 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


20. What is the binding energy?
Impulse is (force)(time)
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
The energy required to remove an electron or nucleon from a molecule.


21. Which kind of lens always has a virtual image?
Diverging
Ohm's Law: V=IR
Concave
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.


22. What is work energy theorem and what is its significance?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
Work is the change in kinetic energy. Work transfers energy to and from a body
The release of a particle or photon from an UNSTABLE nucleus.
Newton


23. What is mass energy equivalence?
Energy and mass are equated by E=mc^2.
No image.
PV=nRT and PV=kT
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.


24. 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
Pgh ..thats ('rho')(gravity's acceleration)(height)
It is when a nucleon changes properties. Like a neutron changing into a proton.
Newton


25. 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


26. What do you do with any vector that is not on either the x or y axis?
Break it up into x and y components using trig - add up the components.
The transfer of thermal energy
Concave
The movement of charges is the current and it is measures by the number of charges per second at a point.


27. This is the gauge pressure when under water.
The release of a Helium nuclei - 4 -2 He2+
The initial velocity - (Vo in the formulas)
(rho)gh
The charge on each capacitor.


28. What is the photoelectric effect?
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.
F=kq1q2/R^2
E=hf=hc/(wavelength)
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.


29. What equation describes the speed in the x-direction of a projectile 't' seconds after it started moving?
Watt
Atmospheric pressure
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
Newton


30. 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
KE = (3/2)kT
But placing more obstacles in the path of the charge's flow.
Light must travel from more to less dense so the refracted ray can bend away from the normal.


31. When is the image negative for mirrors?

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


32. S.I. unit of pressure
Pascal
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
The velocity is positive
Change in voltage across the resistor or capacitor.


33. What is the direction of the centripetal force?
The centripetal force points along the radius towards the center of the circle.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Concave mirrors are converging mirrors.
Work by a system is positive when the gas expands. (The volume increases.)


34. What is the impact on the first law of thermodynamics for an isothermal process?
Velocity has a direction and speed does not have direction.
Convex
The nucleus
dU = zero. The change in temperature of the gas is zero.


35. What is the relationship between speed - frequency - and wavelength?
wave speed = (wavelength)(frequency)
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Initial velocity
Potential energy stored in gravity (PE = mgh)


36. What is the area under the acceleration versus time graph?
Impulse is (force)(time)
Lenses that are thinner in the middle than on the edges.
The CHANGE in velocity.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment


37. What stays the same for capacitors in series?
The graph of force vs displacement
The initial velocity - (Vo in the formulas)
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The charge on each capacitor.


38. How does thickness effect resistance?
Convex
The thicker the wire - the lower the resistance.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Potential energy stored in gravity (PE = mgh)


39. What does light absorption involve?
Moment arm
dU = zero. The change in temperature of the gas is zero.
Entropy always increases.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.


40. S.I. unit of gravitational force
'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.
Vy=Vyo + gt ...Watch the signs.
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Newton


41. What is the relationship between energy - frequency - and wavelength in any wave?
E=hf=hc/(wavelength)
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Force= Pressure/Area
E=kq/r^2 This is the electric field's magnitude at a point in space.


42. How much work is the work done on an object moving in a circle? Why?
Pgh ..thats ('rho')(gravity's acceleration)(height)
Zero. Because the displacement is perpendicular to the force (centripetal force.)
When it is on the 'dark' side of the mirror. Opposite the light.
the refracted ray bends TOWARDS the normal line.


43. What comprises alpha radiation?
When it is on the same side as the image?
The release of a Helium nuclei - 4 -2 He2+
How quickly you change velocity.
The bending of light


44. Define mass in terms of density.
m=(rho)V
When the object is beyond the focus for a concave mirror.
The particle travels in a circle. Radius=momentum/qB
Velocity has a direction and speed does not have direction.


45. Define diffraction
The nucleus
Bends waves around small objects and the interference of waves from a coherent sources.
convex mirrors are diverging mirrors.
THe force that holds the nucleus together.


46. What are three ways to increase the capacitance of a capacitor?
The release of an energetic photon from an overly excited molecule.
Concave
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.


47. 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


48. 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


49. Continuity equation
Work
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
velocity
A1v1=a2v2


50. Which type of radiation has the lowest energy?
Concave
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.
frequency (Think of the color as not changing.)
Alpha