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 does the term electric potential energy mean?
N•m
m^3/s
Zero.
Electric potential is the potential energy associated with the electric force F=qE

2. What is the general equation for motion down a slope and how does it change if the object is going up the slope?
Speed ups
KE=(3/2)kT where k is Boltzman's constant
No image.
x=Vo + ((1/2)g)sin(angle)t^2

3. What does upward slope on a displacement versus time graph imply about the velocity.
The velocity is positive
In front of the mirror - in the light.
kg•m/s
(mg)sin(angle)

4. What two entities comprise a vector?
Magnitude and direction
A potential difference and a flow and energized charges.
(1) Straight through the vertex. (2) Parallel then through the primary focus.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...

5. S.I. unit of power
Watt
frequency (Think of the color as not changing.)
Break it up into x and y components using trig - add up the components.
Atmospheric pressure

6. What is the photoelectric effect?
Resistance: R=R1+R2+R3+...
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
KE=Work
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.

7. Work is the area under which curve?
The release of a Helium nuclei - 4 -2 He2+
Joule
The graph of force vs displacement
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.

8. What doesn't change (speed - frequency - or wavelength) - when light moves from one medium to another?
frequency (Think of the color as not changing.)
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Torque
That the orbits of the electrons are like planets around the Sun.

9. When light travels from LESS dense to a MORE dense mediums - how does the refracted ray bend in relation to the normal line?
According to Coulomb's Law - the new force is 6/4 times the old charge.
It is used in Lenz's Law to determine the change in flux of a conductor.
the refracted ray bends TOWARDS the normal line.
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.

10. 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

11. What shape is a converging mirrors?
velocity
Atmospheric pressure
Newton
Concave mirrors are converging mirrors.

12. When is sum of force (net force) zero?
Newton
PV=nRT and PV=kT
When a body is moving at a constant velocity or not moving at all.
KE = (3/2)kT

13. Electric force felt by a charge due to another charge.
F=kq1q2/R^2
Only 1/4 wavelength fits in the tube. L=wavelength/4
When the object is beyond the focus for a concave mirror.
Work done 'BY' the gas.

14. What is the actual movement of charges - and how is it measured?
The movement of charges is the current and it is measures by the number of charges per second at a point.
The particle travels in a circle. Radius=momentum/qB
The volume under water
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.

15. What do batteries and generators produce?
Speed ups
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
A potential difference and a flow and energized charges.
N/C

16. What do you know about two objects that are launched at different horizontal velocities?
The release of an energetic photon from an overly excited molecule.
Atomic mass number minus atomic number.
They fall - vertically - the by the same amount in the same time.
(Cross-sectional Area)(Velocity)

17. S.I. unit of magnetism
How quickly you change velocity.
(n1)sin(theta1) = (n2)sin(theta2)
The release of a Helium nuclei - 4 -2 He2+
Tesla

18. What is Huygen's Principle?
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Energy and mass are equated by E=mc^2.
Every point on a wave front is a secondary source.
x=Vo + ((1/2)g)sin(angle)t^2

19. What forces charges to move?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
The thicker the wire - the lower the resistance.
The electric field forces charges to move.
F=qE

20. How are velocity and speed different?
Work is the change in kinetic energy. Work transfers energy to and from a body
Velocity has a direction and speed does not have direction.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
A displacement must occur. ( W=Fd)

21. What causes resistance?
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Convex
Obstacles in the path of the flow of charges.

22. Force in terms of pressure
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
m=(rho)V
Force= Pressure/Area
When the object is beyond the focus for a concave mirror.

23. What is the y intercept of the velocity time graph?
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.
It is the time for 1/2 a substance to decay by radioactive processes.
The initial velocity - (Vo in the formulas)
Work is positive when the force and displacement point in the same direction.

24. 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

25. 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

26. In electrostatics - what takes the place of m and g in the formulae?

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

27. What is half life?
It is the time for 1/2 a substance to decay by radioactive processes.
Zero.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Open right hand rule

28. What kind of capacitor circuit adds to find the total capacitance?
Parallel. Because the plates are shared.
dU = zero. The change in temperature of the gas is zero.
Diverging lenses have a negative focal length.
The velocity is positive

29. What is internal energy?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
m=(rho)V
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The motion of the molecules in gas.

30. What is an object placed when the distance between it and the mirror is positive?
In front of the mirror - in the light.
Work
system is the gas being studied. Environment is the surroundings outside the gas.
Adding the momentum of all the bodies.

31. Under what conditions is mechanical work positive?
Impulse
The release of an electron and antineutrino or the release of a positron and a neutrino.
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
Work is positive when the force and displacement point in the same direction.

32. What is Kinetic Energy lost and how is it calculated?
Work done 'BY' the gas.
Sum of the torques equal zero.
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial

33. How does temperature effect resistance?
Vy=Vyo + gt ...Watch the signs.
velocity
The PVT conditions change for a gas without changing the temperature.
The higher the temperature the higher the resistance. They are proportional to each other.

34. Formula for work by a car that changes speed on a horizontal road.
convex mirrors are diverging mirrors.
W = KE:final - KE:initial
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Statistically speaking - energy flows from hot to cold.

35. What stays the same for capacitors in series?
Potential difference is the change in energy of a charged particle divided by its charge.
E=hf=hc/(wavelength)
Break it up into x and y components using trig - add up the components.
The charge on each capacitor.

36. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
Work
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.
The electron
But placing more obstacles in the path of the charge's flow.

37. What does light emission involve?
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Q=0 because thermal energy is not transfered between the system and its surroundings

38. When is the image negative for a lens?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
2(pi)R/T ...Circumference/Period
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
When it is on the same side as the image?

39. Which kind of mirror always has a virtual image?
velocity
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
Convex
Joule

40. Under what conditions is mechanical work negative?
Alpha - Beta - and Gamma
Conservation of Energy ... because E=hf
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Work is positive when the force and displacement point in the same direction.

41. What is the path of a charged particle in a magnetic field?
E=kq/r^2 This is the electric field's magnitude at a point in space.
wave speed = (wavelength)(frequency)
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.
The particle travels in a circle. Radius=momentum/qB

42. What is the electric field's magnitude inside of a container made from an electrical CONDUCTOR?
Zero.
Pascal
Obstacles in the path of the flow of charges.
Newton

43. What are the two forms of the ideal gas law?
Only 1/4 wavelength fits in the tube. L=wavelength/4
PV=nRT and PV=kT
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
x=Vo + ((1/2)g)sin(angle)t^2

44. How is tube length and wavelength related for a tube that is closed on ONE end?
When a body's speed is changing.
Only 1/4 wavelength fits in the tube. L=wavelength/4
They fall - vertically - the by the same amount in the same time.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment

45. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
Something other than zero.
The release of an energetic photon from an overly excited molecule.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Lenses that are fatter in the middle than on the edges.

46. What is heat?
The initial velocity - (Vo in the formulas)
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Joule
The transfer of thermal energy

47. What is the Bohr Model of the atom?
That the orbits of the electrons are like planets around the Sun.
Work of a system is equal to 1-Qc/Qh
The initial velocity - (Vo in the formulas)
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.

48. What two things must be true for a positive magnification?
(1) The image is larger than the object: ho>hi. (2) image is upright.
The electric field forces charges to move.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
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.

49. What is the 1st law of thermodynamics as applied to gases?
the refracted ray bends TOWARDS the normal line.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
The light travels through the image.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment

50. What did Rutherford discover?
Break it up into x and y components using trig - add up the components.
kg•m/s
Ohm's Law: V=IR
The nucleus