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 impact on the first law of thermodynamics for an isothermal process?
dU = zero. The change in temperature of the gas is zero.
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Work by a system is positive when the gas expands. (The volume increases.)
Newton


2. Under what conditions is heat positive?

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


3. 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


4. What equation describes the speed of a dropped object 't' seconds after it started moving?

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


5. What is implied when an object is not accelerating in the x direction?
The charge on each capacitor.
The body is moving at a constant velocity
Statistically speaking - energy flows from hot to cold.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.


6. 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)
PV=nRT and PV=kT
The bending of light
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. Formula for the electric field at point in space for a single point charge.
E=kq/R^2
It is used in Lenz's Law to determine the change in flux of a conductor.
Moment arm
x=Vo + ((1/2)g)sin(angle)t^2


8. What shape is a diverging lenses?
But placing more obstacles in the path of the charge's flow.
Lenses that are thinner in the middle than on the edges.
According to Coulomb's Law - the new force is 6/4 times the old charge.
Broad bright spot in the middle and alternating dark and light spots to the sides.


9. What is an isotope?
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
(rho)gh
The transfer of thermal energy
W = KE:final - KE:initial


10. What does light absorption involve?
It is the net force pointing towards the center.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
velocity
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)


11. What is the path of a charged particle in a magnetic field?
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
The particle travels in a circle. Radius=momentum/qB
A reflected ray's phase is changes by 180° when the ray is bounced as it tries to travel from a lower to higher index of refraction. It is also changed y 180° when it bounces off of shiny surfaces.
W = KE:final - KE:initial


12. Flow Rate
Break it up into x and y components using trig - add up the components.
Work is positive when the force and displacement point in the same direction.
(n1)sin(theta1) = (n2)sin(theta2)
(Cross-sectional Area)(Velocity)


13. What does upward slope on a displacement versus time graph imply about the velocity.
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
The electron
The velocity is positive
Pascal


14. How must the mediums light is traveling through be arranged so that the condition for the critical angle can exist?
Light must travel from more to less dense so the refracted ray can bend away from the normal.
m=(rho)V
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Newton


15. What is the difference between elastic and inelastic collisions? State the relevant equations for each.

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


16. What is the direction of the centripetal force?
Joule
The centripetal force points along the radius towards the center of the circle.
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14


17. 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


18. This is the gauge pressure when under water.
(rho)gh
Change in voltage across the resistor or capacitor.
The transfer of thermal energy
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...


19. Which type of lenses have a NEGATIVE focal length?
THe force that holds the nucleus together.
Diverging lenses have a negative focal length.
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.
The graph of force vs displacement


20. What is the energy equation if you see a height difference between two points in the problem?
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
The longer the length of wire - the higher the resistance.
Potential energy stored in gravity (PE = mgh)
Gamma


21. What kind of image do you get when the object is placed at the focus?
No image.
(rho)gh
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
The volume under water


22. How is tube length and wavelength related for a tube that is opened on both ends?
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Ohm's Law: V=IR
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
Work


23. Under what conditions is heat negative?

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


24. When light travels from LESS dense to a MORE dense mediums - how does the refracted ray bend in relation to the normal line?
Concave mirrors are converging mirrors.
the refracted ray bends TOWARDS the normal line.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
W=qV


25. How does a wires composition effect resistance?

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


26. What are the two forms of the ideal gas law?
E=hf
The volume under water
PV=nRT and PV=kT
The light travels through the image.


27. What is the binding energy?
Something other than zero.
The energy required to remove an electron or nucleon from a molecule.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.


28. What is an isothermal process - and what is its impact on the first law of thermodynamics?
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
Statistically speaking - energy flows from hot to cold.
The PVT conditions change for a gas without changing the temperature.
The release of a Helium nuclei - 4 -2 He2+


29. How does impulse relate to force?
Current stays the same for resistors in series.
Bends waves around small objects and the interference of waves from a coherent sources.
Impulse is (force)(time)
But placing more obstacles in the path of the charge's flow.


30. Under what conditions is mechanical work positive?
Newton
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Work is positive when the force and displacement point in the same direction.
N/C


31. Which kind of mirror can show a real image?
convex mirrors are diverging mirrors.
Concave
Speed ups
Diverging


32. What is conservation of energy and what is its significance?
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Torque
Broad bright spot in the middle and alternating dark and light spots to the sides.
Weight ...w=mg


33. What is implied when an object is not accelerating in the y direction?
Lenses that are fatter in the middle than on the edges.
g=zero so h=(Vyo)t
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.


34. S.I. Unit of electric force
Work of a system is equal to 1-Qc/Qh
The bouncing of light
Newton
Impulse


35. What is temperature?
A change in the gas' temperature.
E=V/d
Lenses that are thinner in the middle than on the edges.
The measure of the average kinetic energy of the molecules.


36. What does the pattern look like in a Young's Double Slit diffraction pattern?
Force= Pressure/Area
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
It is the time for 1/2 a substance to decay by radioactive processes.
Dark in the middle and alternating light and dark spots after that.


37. Unit that means the same thing as Nm
Joule
Tesla
Q=0 because thermal energy is not transfered between the system and its surroundings
It is the net force pointing towards the center.


38. Describe the relationship between Qh - Qc - and W in a heat engine?
Work of a system is equal to 1-Qc/Qh
The volume under water
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.
According to Coulomb's Law - the new force is 6/4 times the old charge.


39. What is the direction of the centripetal acceleration?
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
It is the net force pointing towards the center.


40. What did Thompson discover?
The electron
Q=0 because thermal energy is not transfered between the system and its surroundings
The transfer of thermal energy
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.


41. Formula for the potential difference of a point charge as compared to infinity.
Potential energy stored in gravity (PE = mgh)
V=kq/R
Work of a system is equal to 1-Qc/Qh
'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.


42. What is the work done on a charged particle by the magnetic field? Why?
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.
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.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)


43. What do the period of pendulums and springs each depend on?
E=V/d
The release of an electron and antineutrino or the release of a positron and a neutrino.
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


44. What kind of mirror has a positive focus?
Newton
Concave
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Convex


45. Under what conditions does entropy increase?
The release of an electron and antineutrino or the release of a positron and a neutrino.
Entropy always increases.
E=kq/R^2
Only 1/2 a wavelength fits in the tube. L=wavelength/2


46. What do batteries and generators produce?
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
E=hf
wave speed = (wavelength)(frequency)
A potential difference and a flow and energized charges.


47. 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


48. What is the potential energy of a charge in an electric field?
P=IV
V=kq/R
Only 1/2 a wavelength fits in the tube. L=wavelength/2
The CHANGE in velocity.


49. The 'V' is (rho)Vg
A1v1=a2v2
The volume under water
Concave mirrors are converging mirrors.
V=Vo + at ...The word 'dropped' means no initial velocity.


50. What is the relationship that describes the rate that work is done - or that energy is used?
V=kq/R
Power ... Power equals the change in energy over time.
Work
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.