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 its impact on the first law of thermodynamics of an adiabatic process?
kg•m/s
A1v1=a2v2
Q=0 because thermal energy is not transfered between the system and its surroundings
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.


2. Define diffraction
Watt
(mg)sin(angle)
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Bends waves around small objects and the interference of waves from a coherent sources.


3. How do you find the number of neutrons in an atom?
A change in the gas' temperature.
W=qV
Atomic mass number minus atomic number.
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.


4. What is acceleration?
Energy and mass are equated by E=mc^2.
P=IV
The energy required to remove an electron or nucleon from a molecule.
How quickly you change velocity.


5. Under what conditions is work by a system ( gas) negative?
When the object is beyond the focus for a concave mirror.
Diverging lenses have a negative focal length.
Something other than zero.
Work by a system is negative when the gas contracts. (The volume decreases.)


6. How is the force on a charged particle in a magnetic field creating the path calculated?
The refracted light ray is bent 90°. (Parallel to the interface surface.)
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
m=(rho)V
The release of an electron and antineutrino or the release of a positron and a neutrino.


7. Describe the relationship between Qh - Qc - and W in a heat engine?
The bending of light
The electron
When the body rests on a surface.
Work of a system is equal to 1-Qc/Qh


8. S.I. unit of momentum
Pascal
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.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
kg•m/s


9. What is the binding energy?
The energy required to remove an electron or nucleon from a molecule.
The velocity is positive
Vy=Vyo + gt ...Watch the signs.
Joule


10. Define Refraction
Change in voltage across the resistor or capacitor.
The bending of light
Concave
A1v1=a2v2


11. S.I. unit of gravitational force
F=kq1q2/R^2
Initial velocity
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Newton


12. What is the order of the electromagnetic spectrum?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Weight ...w=mg
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
KE = (3/2)kT


13. How does thickness effect resistance?
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.
The thicker the wire - the lower the resistance.
Work is positive when the force and displacement point in the same direction.


14. What causes resistance?
N•m
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.
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.
Obstacles in the path of the flow of charges.


15. 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


16. What is the relationship that describes the rate that work is done - or that energy is used?
The nucleus
Torque
Power ... Power equals the change in energy over time.
Joule


17. What is the energy of a photon?

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


18. Formula for the electric field between a pari of charged plates.
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
Atomic mass number minus atomic number.
E=V/d
kg•m/s


19. What is the relationship between voltage - current and resistance?

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


20. When light travels from LESS dense to a MORE dense mediums - how does the refracted ray bend in relation to the normal line?
frequency (Think of the color as not changing.)
The measure of the average kinetic energy of the molecules.
the refracted ray bends TOWARDS the normal line.
kg•m/s


21. What direction controls time in falling body and projectile motion problems?
Vertical direction
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.
kg•m/s
Displacement


22. What is the area under the velocity time graph?
Watt
Displacement
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
the refracted ray bends AWAY from the normal line.


23. What is the formula relating emf and voltage?
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Joule
m^3/s
Power ... Power equals the change in energy over time.


24. Define reflection
The bouncing of light
Diverging lenses have a negative focal length.
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Impulse is (force)(time)


25. Under what conditions is mechanical work negative?
Work is positive when the force and displacement point in the same direction.
Parallel. Because the plates are shared.
system is the gas being studied. Environment is the surroundings outside the gas.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt


26. Which type of radiation has the highest energy?
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.
Gamma
Speed ups
Conservation of Energy ... because E=hf


27. How does the speed change when the pressure is decreased?
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
E=kq/R^2
Change in voltage across the resistor or capacitor.
Speed ups


28. How much work is the work done on an object moving in a circle? Why?
KE=(3/2)kT where k is Boltzman's constant
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
The transfer of thermal energy
Zero. Because the displacement is perpendicular to the force (centripetal force.)


29. When are f - p - q - ho - hi - and M positive for mirrors?
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.
When the object is beyond the focus for a concave mirror.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Work of a system is equal to 1-Qc/Qh


30. What is the impact on the first law of thermodynamics for an isothermal process?
Broad bright spot in the middle and alternating dark and light spots to the sides.
dU = zero. The change in temperature of the gas is zero.
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.
(1) Straight through the vertex. (2) Parallel then through the primary focus.


31. What is a key requirement in order for work to be done?
Speed ups
Displacement
A displacement must occur. ( W=Fd)
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.


32. What is the energy equation if you see a height difference between two points in the problem?
A potential difference and a flow and energized charges.
Work is the change in kinetic energy. Work transfers energy to and from a body
A displacement must occur. ( W=Fd)
Potential energy stored in gravity (PE = mgh)


33. What makes an image 'real?'
The light travels through the image.
Newton
2(pi)R/T ...Circumference/Period
F=qE


34. What shape is a converging mirrors?
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
According to Coulomb's Law - the new force is 6/4 times the old charge.
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Concave mirrors are converging mirrors.


35. What is conservation of energy and what is its significance?
Resistance: R=R1+R2+R3+...
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Force lifting a body when it is in a fluid.
The electron


36. What force is always present - and what is its equation?
(1) Straight through the vertex. (2) Parallel then through the primary focus.
Weight ...w=mg
Newton
Gamma


37. Average kinetic energy of an ideal gas's SINGLE molecule.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
KE = (3/2)kT
The charge on each capacitor.
The refracted light ray is bent 90°. (Parallel to the interface surface.)


38. In uniform circular motion - how is tangential velocity calculated?
Alpha - Beta - and Gamma
2(pi)R/T ...Circumference/Period
That the orbits of the electrons are like planets around the Sun.
Tesla


39. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
Joule
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
PV=nRT and PV=kT
Broad bright spot in the middle and alternating dark and light spots to the sides.


40. What is transmutation?
W=qV
A motor uses energy to spin the coils in a magnetic field. A generator spins the coils to create an potential difference.
It is when a nucleon changes properties. Like a neutron changing into a proton.
When the body rests on a surface.


41. Which kind of mirror cannot magnify an image?
Dark in the middle and alternating light and dark spots after that.
Alpha
Convex
Joule


42. Formula for work as a charged particle travels across two charged plates
The measure of the average kinetic energy of the molecules.
The PVT conditions change for a gas without changing the temperature.
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.
W=qV


43. What is implied when an object is not accelerating in the x direction?
The movement of charges is the current and it is measures by the number of charges per second at a point.
The centripetal force points along the radius towards the center of the circle.
Speed ups
The body is moving at a constant velocity


44. What kind of image do you get when the object is placed at the focus?
KE=Work
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
No image.
A displacement must occur. ( W=Fd)


45. Unit that means the same thing as Nm
Joule
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Impulse is the change in momentum
Gamma


46. What is the energy equation if you see a particle accelerated perpendicular to two charged plates - or the problem states that the particle is accelerated through a potential difference?

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


47. S.I. unit of pressure
Pascal
The release of an electron and antineutrino or the release of a positron and a neutrino.
Something other than zero.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


48. What equation describes the distance that a dropped object falls 't' seconds after it started moving?

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


49. What is work energy theorem and what is its significance?
Work is the change in kinetic energy. Work transfers energy to and from a body
Tesla
The bouncing of light
Lenses that are thinner in the middle than on the edges.


50. Under what conditions is heat positive?

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