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 happens at the critical angle?
Alpha - Beta - and Gamma
The refracted light ray is bent 90°. (Parallel to the interface surface.)
Tesla
In front of the mirror - in the light.


2. Define diffraction
The measure of the average kinetic energy of the molecules.
Bends waves around small objects and the interference of waves from a coherent sources.
Open right hand rule
N/C


3. Define mass in terms of density.
Magnitude and direction
Force lifting a body when it is in a fluid.
m=(rho)V
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.


4. What is the relationship that describes the rate that work is done - or that energy is used?
Work of a system is equal to 1-Qc/Qh
Watt
Power ... Power equals the change in energy over time.
Force lifting a body when it is in a fluid.


5. S.I. Unit of electric force
Newton
Work of a system is equal to 1-Qc/Qh
No image.
(1) Straight through the vertex. (2) Parallel then through the primary focus.


6. What does the pattern look like in a Young's Double Slit diffraction pattern?
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Dark in the middle and alternating light and dark spots after that.
Joule
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


7. What is an object placed when the distance between it and the mirror is positive?
But placing more obstacles in the path of the charge's flow.
In front of the mirror - in the light.
The graph of force vs displacement
Newton


8. What comprises gamma decay?
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
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=hc/(wavelength)
The release of an energetic photon from an overly excited molecule.


9. How can total momentum be calculated?
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 NET work BY a system is the area enclosed in a cycle on a PV diagram.
Adding the momentum of all the bodies.
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.


10. What is the energy equation if you see a height difference between two points in the problem?
velocity
Newton
It is the time for 1/2 a substance to decay by radioactive processes.
Potential energy stored in gravity (PE = mgh)


11. 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


12. What shape is a diverging lenses?
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Lenses that are thinner in the middle than on the edges.
Impulse is the change in momentum
E=hf


13. What quantity ADDS for resistors in series?
the refracted ray bends AWAY from the normal line.
x=Vo + ((1/2)g)sin(angle)t^2
P=IV
Resistance: R=R1+R2+R3+...


14. What force is always present - and what is its equation?
Weight ...w=mg
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
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.
Atomic mass number minus atomic number.


15. 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 acceleration is towards the center. It is supplied by the normal force and points towards the center.
Bernoulli's equation - Flow Rate = Volume/time
W = KE:final - KE:initial
THe force that holds the nucleus together.


16. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Something other than zero.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
It is when a nucleon changes properties. Like a neutron changing into a proton.
Pascal


17. Under what conditions is mechanical work positive?
Bends waves around small objects and the interference of waves from a coherent sources.
The particle travels in a circle. Radius=momentum/qB
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
Work is positive when the force and displacement point in the same direction.


18. What stays the same for capacitors in series?
Converging lenses have a positive focal length.
PV=nRT and PV=kT
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
The charge on each capacitor.


19. What is Huygen's Principle?
Provided experimental proof of the wave property of light.
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Displacement
Every point on a wave front is a secondary source.


20. In uniform circular motion - how is tangential velocity calculated?
Gamma
A displacement must occur. ( W=Fd)
2(pi)R/T ...Circumference/Period
(1) The image is larger than the object: ho>hi. (2) image is upright.


21. Which type of lenses have a NEGATIVE focal length?
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Diverging lenses have a negative focal length.
That the orbits of the electrons are like planets around the Sun.
Newton


22. What cause an electromagnetic wave - and what makes the wave propagate indefinitely even in a vacuum?
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.
Impulse is the change in momentum
(Cross-sectional Area)(Velocity)
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.


23. 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


24. Gauge Pressure

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


25. How is the centripetal force represented in a free body diagram?
It is the net force pointing towards the center.
V=kq/R
The longer the length of wire - the higher the resistance.
The CHANGE in velocity.


26. Continuity equation
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
Ohm's Law: V=IR
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
A1v1=a2v2


27. What is the actual movement of charges - and how is it measured?
It is the time for 1/2 a substance to decay by radioactive processes.
The movement of charges is the current and it is measures by the number of charges per second at a point.
KE=Work
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


28. What doesn't change (speed - frequency - or wavelength) - when light moves from one medium to another?
dU = zero. The change in temperature of the gas is zero.
Parallel. Because the plates are shared.
frequency (Think of the color as not changing.)
Pgh ..thats ('rho')(gravity's acceleration)(height)


29. When is a normal force present - what is its direction?
When the body rests on a surface.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
x=Vo + ((1/2)g)sin(angle)t^2
Ohm's Law: V=IR


30. 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?
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.
It is when a nucleon changes properties. Like a neutron changing into a proton.
Lenses that are thinner in the middle than on the edges.
Lenses that are fatter in the middle than on the edges.


31. What is the energy equation for the change in temperature if it results from a loss in KE?

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


32. How does the speed change when the pressure is decreased?
Conservation of Energy ... because E=hf
Speed ups
In front of the mirror - in the light.
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.


33. What is conservation of energy and what is its significance?
Only 1/2 a wavelength fits in the tube. L=wavelength/2
The graph of force vs displacement
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.
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.


34. This is the gauge pressure when under water.
Pascal
(rho)gh
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
The bouncing of light


35. S.I. unit of every kind of energy
Work of a system is equal to 1-Qc/Qh
Joule
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


36. What is acceleration?
How quickly you change velocity.
A change in the gas' temperature.
Impulse is the change in momentum
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.


37. Define Snell's law.
frequency (Think of the color as not changing.)
(n1)sin(theta1) = (n2)sin(theta2)
g=zero so h=(Vyo)t
Vy=Vyo + gt ...Watch the signs.


38. 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


39. 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


40. How does impulse relate to force?
Tesla
Impulse is (force)(time)
Concave mirrors are converging mirrors.
When a body is moving at a constant velocity or not moving at all.


41. What is meant by the terms system and environment?
system is the gas being studied. Environment is the surroundings outside the gas.
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Work of a system is equal to 1-Qc/Qh
m=(rho)V


42. What does the term electric potential energy mean?
No image.
Electric potential is the potential energy associated with the electric force F=qE
Bends waves around small objects and the interference of waves from a coherent sources.
x=Vo + ((1/2)g)sin(angle)t^2


43. How is tube length and wavelength related for a tube that is closed on ONE end?
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
P=IV
2(pi)R/T ...Circumference/Period
Only 1/4 wavelength fits in the tube. L=wavelength/4


44. Which kind of lens always has a virtual image?
Diverging
Vy=Vyo + gt ...Watch the signs.
Q=0 because thermal energy is not transfered between the system and its surroundings
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.


45. 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


46. Which type of lenses have a POSITIVE focal length?
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Converging lenses have a positive focal length.
It is when a nucleon changes properties. Like a neutron changing into a proton.
V=Vo + at ...The word 'dropped' means no initial velocity.


47. Which kind of mirror always has a virtual image?
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.
Sum of the torques equal zero.
Convex
Atmospheric pressure


48. S.I. unit of pressure
Pascal
Resistance: R=R1+R2+R3+...
The bending of light
(n1)sin(theta1) = (n2)sin(theta2)


49. What two things must be true for a positive magnification?
The longer the length of wire - the higher the resistance.
The CHANGE in velocity.
(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


50. What is the direction of the centripetal acceleration?
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
F=Bilsin(theta) ...F=Force (N) - B:=magnetic field (T) - i=current (A) - l=length of wire in the field (m) - theta is the acute angle between the field and current's directions.
The light travels through the image.