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 shape is a diverging lenses?
Bernoulli's equation - Flow Rate = Volume/time
Lenses that are thinner in the middle than on the edges.
The energy required to remove an electron or nucleon from a molecule.
The bouncing of light


2. What is an adiabatic process?
The body is moving at a constant velocity
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
P=IV


3. Condition for no rotation
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
frequency (Think of the color as not changing.)
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
Sum of the torques equal zero.


4. What are three ways to increase the capacitance of a capacitor?
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Provided experimental proof of the wave property of light.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)


5. How can total momentum be calculated?
Adding the momentum of all the bodies.
Resistance: R=R1+R2+R3+...
Velocity has a direction and speed does not have direction.
Joule


6. What is the order of the electromagnetic spectrum?
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.
Electric potential is the potential energy associated with the electric force F=qE
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Diverging


7. What are the two forms of the ideal gas law?
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
m=(rho)V
PV=nRT and PV=kT


8. Force in terms of pressure
Electric potential is the potential energy associated with the electric force F=qE
Statistically speaking - energy flows from hot to cold.
Force= Pressure/Area
(Cross-sectional Area)(Velocity)


9. S.I. unit of Flow rate
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
Adding the momentum of all the bodies.
Work of a system is equal to 1-Qc/Qh
m^3/s


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

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


11. What is a key requirement in order for work to be done?
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
It is the time for 1/2 a substance to decay by radioactive processes.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
A displacement must occur. ( W=Fd)


12. What stays the same for capacitors in series?
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
wave speed = (wavelength)(frequency)
The charge on each capacitor.
Conservation of Energy ... because E=hf


13. Unit that means the same thing as Nm
Newton
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.
When the object is beyond the focus for a concave mirror.
Joule


14. Which kind of mirror can show a real image?
Concave
Magnitude and direction
When a body's speed is changing.
Open right hand rule


15. 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?

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


16. What is the horizontal acceleration of projectiles?
The measure of the average kinetic energy of the molecules.
ZERO
V - a Joule/Coulomb
Break it up into x and y components using trig - add up the components.


17. What does light absorption involve?
Tesla
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Obstacles in the path of the flow of charges.


18. Which kind of mirror always has a virtual image?
Convex
The thicker the wire - the lower the resistance.
Something other than zero.
The transfer of thermal energy


19. How do you find the number of neutrons in an atom?
Newton
Atomic mass number minus atomic number.
The release of a particle or photon from an UNSTABLE nucleus.
V=kq/R


20. 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


21. What is conservation of energy and what is its significance?
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
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
V=kq/R
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.


22. S.I. unit of magnetism
Tesla
Ohm's Law: V=IR
Something other than zero.
Adding the momentum of all the bodies.


23. How much work is the work done on an object moving in a circle? Why?
The release of a particle or photon from an UNSTABLE nucleus.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Zero. Because the displacement is perpendicular to the force (centripetal force.)
The initial velocity - (Vo in the formulas)


24. 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


25. Under what conditions is work by a system ( gas) negative?
It is the time for 1/2 a substance to decay by radioactive processes.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
Work by a system is negative when the gas contracts. (The volume decreases.)
The light travels through the image.


26. Define Snell's law.
(Cross-sectional Area)(Velocity)
(n1)sin(theta1) = (n2)sin(theta2)
frequency (Think of the color as not changing.)
m^3/s


27. Which kind of mirror cannot magnify an image?
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Convex
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
dU = zero. The change in temperature of the gas is zero.


28. 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


29. What causes resistance?
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.
Gamma
Obstacles in the path of the flow of charges.
Alpha - Beta - and Gamma


30. Describe the relationship between Qh - Qc - and W in a heat engine?
Change in voltage across the resistor or capacitor.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Work of a system is equal to 1-Qc/Qh
Electric potential is the potential energy associated with the electric force F=qE


31. What is internal energy?
The motion of the molecules in gas.
(mg)sin(angle)
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.
The measure of the average kinetic energy of the molecules.


32. What cause an electromagnetic wave - and what makes the wave propagate indefinitely even in a vacuum?
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.
The refracted light ray is bent 90°. (Parallel to the interface surface.)
E=kq/r^2 This is the electric field's magnitude at a point in space.
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.


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
A displacement must occur. ( W=Fd)
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
The motion of the molecules in gas.


34. What is the difference between atomic number and atomic mass number?
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
The charge on each capacitor.
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.
Diverging lenses have a negative focal length.


35. What is the difference between the variable 'q' and 'Q?'?

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


36. What is needed for electromagnetic induction to occur?
Work of a system is equal to 1-Qc/Qh
Vy=Vyo + gt ...Watch the signs.
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.
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.


37. What shape is a converging mirrors?
Concave mirrors are converging mirrors.
The light travels through the image.
A displacement must occur. ( W=Fd)
Work


38. How is the centripetal force represented in a free body diagram?
Lenses that are thinner in the middle than on the edges.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
It is the net force pointing towards the center.
The energy required to remove an electron or nucleon from a molecule.


39. What are the two rules for ray tracing in lenses that work all the time?
Weber
Dark in the middle and alternating light and dark spots after that.
(1) Straight through the vertex. (2) Parallel then through the primary focus.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.


40. How is a force's direction oriented compared to a bodies direction of motion to get a circular (curved) path of motion?
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
The particle travels in a circle. Radius=momentum/qB
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial


41. When is sum of force (net force) zero?
Diverging
Vy=Vyo + gt ...Watch the signs.
Alpha
When a body is moving at a constant velocity or not moving at all.


42. What is the energy equation if a force (friction) through a distance results in heat and thus a change in temperature?
KE=Work
(1) The image is larger than the object: ho>hi. (2) image is upright.
A change in the gas' temperature.
When it is on the same side as the image?


43. How is tube length and wavelength related for a tube that is closed on ONE end?
Only 1/4 wavelength fits in the tube. L=wavelength/4
(n1)sin(theta1) = (n2)sin(theta2)
Newton
Convex


44. S.I. unit of work
P=IV
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Diverging lenses have a negative focal length.
Joule


45. How does the speed change when the pressure is decreased?
Concave mirrors are converging mirrors.
m=(rho)V
KE=Work
Speed ups


46. What two things must be true for a positive magnification?
Potential difference is the change in energy of a charged particle divided by its charge.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
(1) The image is larger than the object: ho>hi. (2) image is upright.
Concave


47. What is transmutation?
It is when a nucleon changes properties. Like a neutron changing into a proton.
A displacement must occur. ( W=Fd)
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.
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.


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 the direction of the centripetal force?
The centripetal force points along the radius towards the center of the circle.
(n1)sin(theta1) = (n2)sin(theta2)
Vertical direction
PV=nRT and PV=kT


50. What is the actual movement of charges - and how is it measured?
The volume under water
The movement of charges is the current and it is measures by the number of charges per second at a point.
V=kq/R
The thicker the wire - the lower the resistance.