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. When is the image negative for a lens?
Alpha
When it is on the same side as the image?
N•m
Ohm's Law: V=IR


2. Under what conditions does entropy increase?
Entropy always increases.
Work by a system is negative when the gas contracts. (The volume decreases.)
Conservation of Energy ... because E=hf
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


3. What kind of image do you get when the object is placed at the focus?
No image.
PV=nRT and PV=kT
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
Potential difference is the change in energy of a charged particle divided by its charge.


4. What is the component of 'mg' parallel to a slope?
When a body is moving at a constant velocity or not moving at all.
(mg)sin(angle)
F=kq1q2/R^2
velocity


5. What is acceleration?
Weight ...w=mg
Adding the momentum of all the bodies.
How quickly you change velocity.
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.


6. In a pendulum or spring - what are the displacement - velocity - PES - and K at maximum displacement?
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.
Conservation of Energy ... because E=hf
When a body's speed is changing.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


7. What is electromagnetic induction?
The bending of light
Moment arm
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
frequency (Think of the color as not changing.)


8. How does thickness effect resistance?
The movement of charges is the current and it is measures by the number of charges per second at a point.
Convex
It is when a nucleon changes properties. Like a neutron changing into a proton.
The thicker the wire - the lower the resistance.


9. What are the three rules needed for mirrors - since not all three work every time?
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
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
Alpha - Beta - and Gamma
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


10. What is mass energy equivalence?
Energy and mass are equated by E=mc^2.
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.
Weight ...w=mg
Zero. Because the displacement is perpendicular to the force (centripetal force.)


11. 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


12. Condition for no rotation
ZERO
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
Magnitude and direction
Sum of the torques equal zero.


13. 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.
Lenses that are thinner in the middle than on the edges.
The particle travels in a circle. Radius=momentum/qB
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


14. What equation describes the speed in the x-direction of a projectile 't' seconds after it started moving?
m=(rho)V
When a body's speed is changing.
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
the refracted ray bends AWAY from the normal line.


15. When is a normal force present - what is its direction?
Alpha - Beta - and Gamma
When the body rests on a surface.
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
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.


16. What is internal energy?
Bends waves around small objects and the interference of waves from a coherent sources.
ZERO
The motion of the molecules in gas.
Pgh ..thats ('rho')(gravity's acceleration)(height)


17. How does impulse relate to force?
Atmospheric pressure
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
Impulse is (force)(time)
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.


18. What is temperature?
x=Vo + ((1/2)g)sin(angle)t^2
F=kq1q2/R^2
frequency (Think of the color as not changing.)
The measure of the average kinetic energy of the molecules.


19. What stays the same for resistors or capacitors in parallel?
Change in voltage across the resistor or capacitor.
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
F=qE
The transfer of thermal energy


20. How is the direction of the force on a current carrying wire calculated?
Every point on a wave front is a secondary source.
Pascal
x=Vo + ((1/2)g)sin(angle)t^2
Open right hand rule


21. What is the direction of the centripetal acceleration?
x=Vo + ((1/2)g)sin(angle)t^2
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
Energy and mass are equated by E=mc^2.
Impulse is the change in momentum


22. What are the two rules for ray tracing in lenses that work all the time?
frequency (Think of the color as not changing.)
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
(1) Straight through the vertex. (2) Parallel then through the primary focus.


23. 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


24. What are the three types of radiation?
system is the gas being studied. Environment is the surroundings outside the gas.
Alpha - Beta - and Gamma
Joule
The bending of light


25. Pressure of an open container at the opening.
In front of the mirror - in the light.
F=qE
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
Atmospheric pressure


26. What is the direction of the centripetal force?
Concave
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
Atmospheric pressure
The centripetal force points along the radius towards the center of the circle.


27. What is the area under the velocity time graph?
KE=(3/2)kT where k is Boltzman's constant
Newton
system is the gas being studied. Environment is the surroundings outside the gas.
Displacement


28. What is an object placed when the distance between it and the mirror is positive?
E=hf=hc/(wavelength)
In front of the mirror - in the light.
Alpha
But placing more obstacles in the path of the charge's flow.


29. Under what conditions is mechanical work positive?
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Weber
kg•m/s
Work is positive when the force and displacement point in the same direction.


30. How does the speed change when the pressure is decreased?
When a body is moving at a constant velocity or not moving at all.
Joule
Concave
Speed ups


31. What is the potential energy of a charge in an electric field?
V=kq/R
Lenses that are fatter in the middle than on the edges.
Adding the momentum of all the bodies.
When it is on the 'dark' side of the mirror. Opposite the light.


32. What direction controls time in falling body and projectile motion problems?
E=hf=hc/(wavelength)
Vertical direction
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.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.


33. What comprises gamma decay?
The release of an energetic photon from an overly excited molecule.
The nucleus
A potential difference and a flow and energized charges.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.


34. 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


35. Define Snell's law.
Break it up into x and y components using trig - add up the components.
The volume under water
(n1)sin(theta1) = (n2)sin(theta2)
E=V/d


36. How is the centripetal force represented in a free body diagram?
It is the net force pointing towards the center.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
2(pi)R/T ...Circumference/Period
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


37. 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


38. What does the term potential difference mean?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Potential difference is the change in energy of a charged particle divided by its charge.
The velocity is positive
The higher the temperature the higher the resistance. They are proportional to each other.


39. What causes radioactivity?
The release of an energetic photon from an overly excited molecule.
Atmospheric pressure
The release of a particle or photon from an UNSTABLE nucleus.
Force= Pressure/Area


40. Define mass in terms of density.
Pgh ..thats ('rho')(gravity's acceleration)(height)
The centripetal force points along the radius towards the center of the circle.
When the object is beyond the focus for a concave mirror.
m=(rho)V


41. How much work is the work done on an object moving in a circle? Why?
The bending of light
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
The measure of the average kinetic energy of the molecules.


42. 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


43. What does the term electric potential energy mean?
F=qE
Displacement
Electric potential is the potential energy associated with the electric force F=qE
The transfer of thermal energy


44. 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


45. How can total momentum be calculated?
Watt
V=kq/R
Adding the momentum of all the bodies.
The movement of charges is the current and it is measures by the number of charges per second at a point.


46. Formula for the electric field at point in space for a single point charge.
Entropy always increases.
2(pi)R/T ...Circumference/Period
Every point on a wave front is a secondary source.
E=kq/R^2


47. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
KE=(3/2)kT where k is Boltzman's constant
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
The energy required to remove an electron or nucleon from a molecule.
Statistically speaking - energy flows from hot to cold.


48. What is the work done on a charged particle by the magnetic field? Why?
Ohm's Law: V=IR
E=kq/r^2 This is the electric field's magnitude at a point in space.
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Potential energy stored in gravity (PE = mgh)


49. 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
How quickly you change velocity.
N/C
Velocity has a direction and speed does not have direction.


50. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Something other than zero.
Convex
The body is moving at a constant velocity
The measure of the average kinetic energy of the molecules.