Test your basic knowledge |

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 the order of the visible range electromagnetic spectrum?
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
Work
When a body is moving at a constant velocity or not moving at all.

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

3. What shape is a diverging lenses?
Change in voltage across the resistor or capacitor.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Lenses that are thinner in the middle than on the edges.
Pascal

4. What are the three types of radiation?
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.
Something other than zero.
Alpha - Beta - and Gamma
THe force that holds the nucleus together.

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

6. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Something other than zero.
Diverging
Break it up into x and y components using trig - add up the components.
Speed ups

7. Which kind of mirror cannot magnify an image?
Work is the change in kinetic energy. Work transfers energy to and from a body
Convex
Impulse is (force)(time)
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.

8. The speed of a ball when it lands at the same height it was thrown from.
The release of a Helium nuclei - 4 -2 He2+
(rho)gh
The volume under water
Initial velocity

9. What happens at the critical angle?
The refracted light ray is bent 90°. (Parallel to the interface surface.)
Current stays the same for resistors in series.
Vy=Vyo + gt ...Watch the signs.
The motion of the molecules in gas.

10. Which type of radiation has the highest energy?
Gamma
Open right hand rule
But placing more obstacles in the path of the charge's flow.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.

11. Under what conditions is work by a system ( gas) positive?
It is the time for 1/2 a substance to decay by radioactive processes.
A change in the gas' temperature.
kg•m/s
Work by a system is positive when the gas expands. (The volume increases.)

12. What is the work done on a charged particle by the magnetic field? Why?
It is when a nucleon changes properties. Like a neutron changing into a proton.
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)

13. 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?

14. What is needed for electromagnetic induction to occur?
The motion of the molecules in gas.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
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.
Impulse is (force)(time)

15. What is the second law of thermodynamics?
system is the gas being studied. Environment is the surroundings outside the gas.
Statistically speaking - energy flows from hot to cold.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
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.

16. Formula for the potential difference of a point charge as compared to infinity.
V=kq/R
Diverging lenses have a negative focal length.
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
Work

17. How does a wires composition effect resistance?

18. This is used to determine the speed of a fluid when the pipe slopes up or down.

19. When is sum of force (net force) zero?
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
Open right hand rule
When a body is moving at a constant velocity or not moving at all.
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.

20. What forces charges to move?
Concave mirrors are converging mirrors.
The electric field forces charges to move.
kg•m/s
Torque

21. What is temperature?
The measure of the average kinetic energy of the molecules.
The bending of light
kg•m/s
wave speed = (wavelength)(frequency)

22. What is an object placed when the distance between it and the mirror is positive?
Power ... Power equals the change in energy over time.
In front of the mirror - in the light.
It is when a nucleon changes properties. Like a neutron changing into a proton.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.

23. What is the order of the electromagnetic spectrum?
Concave
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Provided experimental proof of the wave property of light.
Alpha - Beta - and Gamma

24. 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 top edge of the bowl?
convex mirrors are diverging mirrors.
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
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.

25. What does the pattern look like in a Young's Double Slit diffraction pattern?
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
2(pi)R/T ...Circumference/Period
Dark in the middle and alternating light and dark spots after that.

26. Under what conditions is mechanical work positive?
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Work is positive when the force and displacement point in the same direction.
Gamma

27. What stays the same for capacitors in series?
The charge on each capacitor.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
Diverging

28. What is implied when an object is not accelerating in the y direction?
KE = (3/2)kT
A change in the gas' temperature.
The initial velocity - (Vo in the formulas)
g=zero so h=(Vyo)t

29. What comprises beta radiation?
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
The release of an electron and antineutrino or the release of a positron and a neutrino.
Speed ups
The particle travels in a circle. Radius=momentum/qB

30. What equation describes the speed in the y-direction of a projectile 't' seconds after it started moving?
Vy=Vyo + gt ...Watch the signs.
The refracted light ray is bent 90°. (Parallel to the interface surface.)
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.
F=kq1q2/R^2

31. S.I. unit of torque
The release of a particle or photon from an UNSTABLE nucleus.
The volume under water
Gamma
N•m

32. S.I. unit of frictional force
Q=0 because thermal energy is not transfered between the system and its surroundings
Joule
Newton
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2

33. What is electromagnetic induction?
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Work done 'BY' the gas.
Only 1/4 wavelength fits in the tube. L=wavelength/4
Displacement

34. What is Kinetic Energy lost and how is it calculated?
F=kq1q2/R^2
The movement of charges is the current and it is measures by the number of charges per second at a point.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
m=(rho)V

35. Under what conditions is heat positive?

36. What is the energy equation if you see a height difference between two points in the problem?
Potential energy stored in gravity (PE = mgh)
The PVT conditions change for a gas without changing the temperature.
Energy and mass are equated by E=mc^2.
In front of the mirror - in the light.

37. What shapes are converging lenses?
Impulse is (force)(time)
Lenses that are fatter in the middle than on the edges.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
Work is positive when the force and displacement point in the same direction.

38. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
E=hf
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.

39. Electric force felt by a charge due to another charge.
Pascal
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
F=kq1q2/R^2
KE = (3/2)kT

40. What is heat?
The transfer of thermal energy
Displacement
The thicker the wire - the lower the resistance.
Lenses that are thinner in the middle than on the edges.

41. When is sum of force (net force) NOT zero?

42. What causes radioactivity?
Zero.
The release of a particle or photon from an UNSTABLE nucleus.
(1) The image is larger than the object: ho>hi. (2) image is upright.
Parallel. Because the plates are shared.

43. Define diffraction
The nucleus
Bends waves around small objects and the interference of waves from a coherent sources.
Zero.
'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.

44. Define Snell's law.
Sum of the torques equal zero.
W = KE:final - KE:initial
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
(n1)sin(theta1) = (n2)sin(theta2)

45. Energy of a SINGLE photon
E=V/d
Speed ups
The longer the length of wire - the higher the resistance.
E=hf

46. Gauge Pressure

47. The 'V' is (rho)Vg
velocity
E=kq/r^2 This is the electric field's magnitude at a point in space.
They fall - vertically - the by the same amount in the same time.
The volume under water

48. Which type of radiation has the lowest energy?
Alpha
When the body rests on a surface.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
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.

49. How does impulse relate to force?
Impulse is (force)(time)
Work is positive when the force and displacement point in the same direction.
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.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14

50. How is the net work of a system (gas) measured?
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
It is the time for 1/2 a substance to decay by radioactive processes.
Diverging lenses have a negative focal length.
P=IV