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 did Thompson discover?
Magnitude and direction
The electron
Concave
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)

2. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
Impulse
W = KE:final - KE:initial
Break it up into x and y components using trig - add up the components.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.

3. What is the impact on the first law of thermodynamics for an isothermal process?
dU = zero. The change in temperature of the gas is zero.
The PVT conditions change for a gas without changing the temperature.
E=kq/r^2 This is the electric field's magnitude at a point in space.
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.

4. What does the pattern look like in a Young's Double Slit diffraction pattern?
The electron
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 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.
Dark in the middle and alternating light and dark spots after that.

5. In a pendulum or spring - what are the displacement - velocity - PES - and K at maximum displacement?
Open right hand rule
Impulse is the change in momentum
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.
Impulse is (force)(time)

6. How is the force on a charged particle in a magnetic field creating the path calculated?
It is when a nucleon changes properties. Like a neutron changing into a proton.
Dark in the middle and alternating light and dark spots after that.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
Newton

7. What are 2 key differences between electric force and gravitational force?

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

8. Average kinetic energy of an ideal gas's SINGLE molecule.
KE = (3/2)kT
When it is on the same side as the image?
Displacement
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial

9. What is implied when an object is not accelerating in the y direction?
(Cross-sectional Area)(Velocity)
No image.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
g=zero so h=(Vyo)t

10. What is impulse?
The CHANGE in velocity.
E=kq/R^2
That the orbits of the electrons are like planets around the Sun.
Impulse is the change in momentum

11. What equation describes the speed in the x-direction of a projectile 't' seconds after it started moving?
The graph of force vs displacement
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
N/C
The velocity is positive

12. S.I. unit of flux
Weber
When the body rests on a surface.
Energy and mass are equated by E=mc^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.

13. What is a key requirement in order for work to be done?
A displacement must occur. ( W=Fd)
The release of an energetic photon from an overly excited molecule.
When it is on the 'dark' side of the mirror. Opposite the light.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.

14. What comprises alpha radiation?
Energy and mass are equated by E=mc^2.
The release of a Helium nuclei - 4 -2 He2+
Only 1/4 wavelength fits in the tube. L=wavelength/4
kg•m/s

15. Formula for work by a car that changes speed on a horizontal road.
Bends waves around small objects and the interference of waves from a coherent sources.
W = KE:final - KE:initial
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
The initial velocity - (Vo in the formulas)

16. What is implied when an object is not accelerating in the x direction?
The energy required to remove an electron or nucleon from a molecule.
Work done 'BY' the gas.
The body is moving at a constant velocity
Gamma

17. How is the net work of a system (gas) measured?
x=Vo + ((1/2)g)sin(angle)t^2
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Lenses that are thinner in the middle than on the edges.
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.

18. What is the actual movement of charges - and how is it measured?
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
How quickly you change velocity.
The movement of charges is the current and it is measures by the number of charges per second at a point.
V - a Joule/Coulomb

19. How does the speed change when the pressure is decreased?
It is used in Lenz's Law to determine the change in flux of a conductor.
Speed ups
E=hf
KE=Work

20. How can you tell when an engine is a Carnot Engine?

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

21. 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
Diverging
V=kq/R
Weight ...w=mg

22. What kind of mirror has a positive focus?
Obstacles in the path of the flow of charges.
When it is on the same side as the image?
Concave
The volume under water

23. What conservation law dictates that the frequency of light cannot change as it travels between mediums?
Conservation of Energy ... because E=hf
Work done 'BY' the gas.
When it is on the same side as the image?
Newton

24. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
The release of a Helium nuclei - 4 -2 He2+
Newton
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)

25. What does upward slope on a displacement versus time graph imply about the velocity.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Diverging
Bends waves around small objects and the interference of waves from a coherent sources.
The velocity is positive

26. What is the path of a charged particle in a magnetic field?
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
THe force that holds the nucleus together.
the refracted ray bends TOWARDS the normal line.
The particle travels in a circle. Radius=momentum/qB

27. 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

28. What is ionization energy and how does it compare to the work function?
Joule
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 measure of the average kinetic energy of the molecules.
Impulse

29. What forces charges to move?
Current stays the same for resistors in series.
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
E=hf=hc/(wavelength)
The electric field forces charges to move.

30. State the significance of Young's Experiment.
Provided experimental proof of the wave property of light.
Open right hand rule
2(pi)R/T ...Circumference/Period
V=kq/R

31. What is the direction of the centripetal force?
Every point on a wave front is a secondary source.
the refracted ray bends AWAY from the normal line.
The centripetal force points along the radius towards the center of the circle.
Newton

32. Define diffraction
Something other than zero.
Bends waves around small objects and the interference of waves from a coherent sources.
Open right hand rule
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.

33. What did Rutherford discover?
The nucleus
It is when a nucleon changes properties. Like a neutron changing into a proton.
(rho)gh
E=hf

34. What is force times the perpendicular distance?
Vy=Vyo + gt ...Watch the signs.
Adding the momentum of all the bodies.
Torque
kg•m/s

35. What is the strong force?
THe force that holds the nucleus together.
Entropy always increases.
When the body rests on a surface.
Force lifting a body when it is in a fluid.

36. What direction controls time in falling body and projectile motion problems?
Vertical direction
The energy required to remove an electron or nucleon from a molecule.
The velocity is positive
x=Vo + ((1/2)g)sin(angle)t^2

37. Pressure of an open container at the opening.
Atmospheric pressure
But placing more obstacles in the path of the charge's flow.
The nucleus
Diverging lenses have a negative focal length.

38. S.I. unit of every kind of energy
Joule
2(pi)R/T ...Circumference/Period
dU = zero. The change in temperature of the gas is zero.
When a body is moving at a constant velocity or not moving at all.

39. 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

40. What is the electric field's magnitude inside of a container made from an electrical CONDUCTOR?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Zero.
When a body is moving at a constant velocity or not moving at all.
Impulse is the change in momentum

41. The speed of a ball when it lands at the same height it was thrown from.
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.
Initial velocity
W = KE:final - KE:initial
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.

42. S.I. Unit of electric force
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
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.
Work done 'BY' the gas.
Newton

43. What shape is a converging mirrors?
m=(rho)V
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
Concave mirrors are converging mirrors.

44. Under what conditions is work by a system ( gas) negative?
Ohm's Law: V=IR
Potential energy stored in gravity (PE = mgh)
N•m
Work by a system is negative when the gas contracts. (The volume decreases.)

45. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
When it is on the same side as the image?
Something other than zero.
Concave mirrors are converging mirrors.

46. What is the difference between reflection - refraction - and diffraction?
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
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.
Work is positive when the force and displacement point in the same direction.
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

47. S.I. unit of power
Work by a system is positive when the gas expands. (The volume increases.)
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
Tesla
Watt

48. What quantity is calculated from slope of the displacement versus time graph?
velocity
Potential difference is the change in energy of a charged particle divided by its charge.
Lenses that are fatter in the middle than on the edges.
Potential energy stored in gravity (PE = mgh)

49. What is heat?
When a body's speed is changing.
The charge on each capacitor.
The transfer of thermal energy
The acceleration is towards the center. It is supplied by the normal force and points towards the center.

50. How is the direction of the force on a current carrying wire calculated?
Open right hand rule
Concave
Entropy always increases.
The volume under water