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 conservation law dictates that the frequency of light cannot change as it travels between mediums?
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
Conservation of Energy ... because E=hf
Concave mirrors are converging mirrors.
Work is positive when the force and displacement point in the same direction.


2. Force in terms of pressure
Force= Pressure/Area
Only 1/2 a wavelength fits in the tube. L=wavelength/2
x=Vo + ((1/2)g)sin(angle)t^2
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


3. What comprises gamma decay?
The body is moving at a constant velocity
The release of an energetic photon from an overly excited molecule.
Joule
Resistance: R=R1+R2+R3+...


4. How does impulse relate to force?
Impulse is (force)(time)
Provided experimental proof of the wave property of light.
Sum of the torques equal zero.
E=hf=hc/(wavelength)


5. What shape is a converging mirrors?
Concave mirrors are converging mirrors.
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
V - a Joule/Coulomb
The motion of the molecules in gas.


6. What quantity is calculated from slope of the displacement versus time graph?
velocity
Potential energy stored in gravity (PE = mgh)
P=IV
Sum of the torques equal zero.


7. 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


8. 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


9. What is implied when an object is not accelerating in the y direction?
g=zero so h=(Vyo)t
It is when a nucleon changes properties. Like a neutron changing into a proton.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Convex


10. When is sum of force (net force) zero?
The initial velocity - (Vo in the formulas)
Work is positive when the force and displacement point in the same direction.
When a body is moving at a constant velocity or not moving at all.
The charge on each capacitor.


11. Define mass in terms of density.
The initial velocity - (Vo in the formulas)
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
Alpha
m=(rho)V


12. What does the term potential difference mean?
Potential difference is the change in energy of a charged particle divided by its charge.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
2(pi)R/T ...Circumference/Period
The nucleus


13. Which kind of mirror cannot magnify an image?
F=qE
Convex
m^3/s
When the object is beyond the focus for a concave mirror.


14. Under what conditions is mechanical work positive?
Work
wave speed = (wavelength)(frequency)
Work is positive when the force and displacement point in the same direction.
Potential difference is the change in energy of a charged particle divided by its charge.


15. What is the relationship between power - voltage and current?
P=IV
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
Concave
Initial velocity


16. 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


17. Formula for the electric field at point in space for a single point charge.
How quickly you change velocity.
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.
E=kq/R^2
Alpha - Beta - and Gamma


18. What is the path of a charged particle in a magnetic field?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
kg•m/s
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
The particle travels in a circle. Radius=momentum/qB


19. What is the area under the acceleration versus time graph?
The CHANGE in velocity.
V=kq/R
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
The transfer of thermal energy


20. Define Snell's law.
PV=nRT and PV=kT
V=kq/R
(n1)sin(theta1) = (n2)sin(theta2)
The graph of force vs displacement


21. How do you find the number of neutrons in an atom?
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Atomic mass number minus atomic number.
Work by a system is positive when the gas expands. (The volume increases.)
A displacement must occur. ( W=Fd)


22. How must the mediums light is traveling through be arranged so that the condition for the critical angle can exist?
the refracted ray bends TOWARDS the normal line.
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Light must travel from more to less dense so the refracted ray can bend away from the normal.
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.


23. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
Concave mirrors are converging mirrors.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.


24. 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


25. Describe the relationship between Qh - Qc - and W in a heat engine?
Lenses that are thinner in the middle than on the edges.
Entropy always increases.
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Work of a system is equal to 1-Qc/Qh


26. How is the net work of a system (gas) measured?
When it is on the same side as the image?
E=kq/R^2
The CHANGE in velocity.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.


27. 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.
Lenses that are fatter in the middle than on the edges.
Diverging lenses have a negative focal length.
The volume under water


28. What causes resistance?
Lenses that are thinner in the middle than on the edges.
velocity
The motion of the molecules in gas.
Obstacles in the path of the flow of charges.


29. Under what conditions is heat positive?

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


30. What is an isothermal process - and what is its impact on the first law of thermodynamics?
Joule
Potential difference is the change in energy of a charged particle divided by its charge.
The PVT conditions change for a gas without changing the temperature.
ZERO


31. What shapes are converging lenses?
Obstacles in the path of the flow of charges.
According to Coulomb's Law - the new force is 6/4 times the old charge.
Lenses that are fatter in the middle than on the edges.
Work by a system is positive when the gas expands. (The volume increases.)


32. What is electromagnetic induction?
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
When it is on the same side as the image?
P=IV
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


33. What is force times time?
E=kq/R^2
velocity
Impulse
Lenses that are fatter in the middle than on the edges.


34. 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


35. S.I. unit of gravitational force
Potential energy stored in gravity (PE = mgh)
It is when a nucleon changes properties. Like a neutron changing into a proton.
Newton
Provided experimental proof of the wave property of light.


36. How is the magnitude of the force on a current carrying wire calculated?

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


37. Under what conditions is work by a system ( gas) positive?
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
Atomic mass number minus atomic number.
Work by a system is positive when the gas expands. (The volume increases.)
The body is moving at a constant velocity


38. 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


39. What happens at the critical angle?
Q=0 because thermal energy is not transfered between the system and its surroundings
Work of a system is equal to 1-Qc/Qh
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.)


40. What is the general equation for motion down a slope and how does it change if the object is going up the slope?
Work
(mg)sin(angle)
Bernoulli's equation - Flow Rate = Volume/time
x=Vo + ((1/2)g)sin(angle)t^2


41. What is the work done on a charged particle by the magnetic field? Why?
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Newton
A potential difference and a flow and energized charges.
Break it up into x and y components using trig - add up the components.


42. Define diffraction
It is used in Lenz's Law to determine the change in flux of a conductor.
kg•m/s
Bends waves around small objects and the interference of waves from a coherent sources.
The bending of light


43. What forces charges to move?
2(pi)R/T ...Circumference/Period
Displacement
A1v1=a2v2
The electric field forces charges to move.


44. Unit of electric field
Dark in the middle and alternating light and dark spots after that.
The body is moving at a constant velocity
N/C
Zero.


45. What is impulse?
Impulse is the change in momentum
The electric field forces charges to move.
Ohm's Law: V=IR
Alpha - Beta - and Gamma


46. What is the order of the electromagnetic spectrum?
(mg)sin(angle)
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
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.
Weber


47. Under what conditions does entropy increase?
Gamma
It is when a nucleon changes properties. Like a neutron changing into a proton.
Entropy always increases.
That the orbits of the electrons are like planets around the Sun.


48. What do batteries and generators produce?
A potential difference and a flow and energized 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.
Entropy always increases.
The CHANGE in velocity.


49. What two entities comprise a vector?
Work
Magnitude and direction
(n1)sin(theta1) = (n2)sin(theta2)
Work by a system is positive when the gas expands. (The volume increases.)


50. What kind of image do you get when the object is placed at the focus?
No image.
Power ... Power equals the change in energy over time.
V=kq/R
The light travels through the image.