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 comprises gamma decay?
The release of an energetic photon from an overly excited molecule.
It is the time for 1/2 a substance to decay by radioactive processes.
Light must travel from more to less dense so the refracted ray can bend away from the normal.
Provided experimental proof of the wave property of light.


2. What kind of mirror has a positive focus?
No image.
Concave
Light must travel from more to less dense so the refracted ray can bend away from the normal.
The energy required to remove an electron or nucleon from a molecule.


3. 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


4. Gauge Pressure

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


5. In uniform circular motion - how is tangential velocity calculated?
PV=nRT and PV=kT
Work
E=kq/r^2 This is the electric field's magnitude at a point in space.
2(pi)R/T ...Circumference/Period


6. Pressure of an open container at the opening.
Atmospheric pressure
Convex
Impulse
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.


7. S.I. unit of momentum
V=kq/R
frequency (Think of the color as not changing.)
kg•m/s
Concave


8. What conservation law dictates that the frequency of light cannot change as it travels between mediums?
Sum of the torques equal zero.
Conservation of Energy ... because E=hf
velocity
Weber


9. What force is always present - and what is its equation?
When it is on the 'dark' side of the mirror. Opposite the light.
The release of an energetic photon from an overly excited molecule.
Weight ...w=mg
Statistically speaking - energy flows from hot to cold.


10. What is the general equation for motion down a slope and how does it change if the object is going up the slope?
When the body rests on a surface.
The electric field forces charges to move.
x=Vo + ((1/2)g)sin(angle)t^2
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)


11. S.I. unit of Flow rate
m^3/s
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.
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
The bending of light


12. What is the formula relating emf and voltage?
The thicker the wire - the lower the resistance.
When it is on the same side as the image?
Impulse
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)


13. Which type of lenses have a NEGATIVE focal length?
Every point on a wave front is a secondary source.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Vertical direction
Diverging lenses have a negative focal length.


14. When are f - p - q - ho - hi - and M positive for mirrors?
Heat - (the 'Q' variable) - is POSITIVE when thermal energy is being ADDED to a system.
wave speed = (wavelength)(frequency)
When the object is beyond the focus for a concave mirror.
PV=nRT and PV=kT


15. What is the difference between reflection - refraction - and diffraction?
E=V/d
The centripetal force points along the radius towards the center of the circle.
(1) The image is larger than the object: ho>hi. (2) image is upright.
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.


16. What is an isotope?
The electric field forces charges to move.
PV=nRT and PV=kT
The release of an electron and antineutrino or the release of a positron and a neutrino.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14


17. What is implied when an object is not accelerating in the x direction?
The body is moving at a constant velocity
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Broad bright spot in the middle and alternating dark and light spots to the sides.
Joule


18. What is the horizontal acceleration of projectiles?
V=Vo + at ...The word 'dropped' means no initial velocity.
wave speed = (wavelength)(frequency)
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
ZERO


19. How much work is the work done on an object moving in a circle? Why?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
velocity
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.
The CHANGE in velocity.


20. What is transmutation?
Work is the change in kinetic energy. Work transfers energy to and from a body
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.
It is the release of photoelectrons released by photons with an energy (E=hf) above the work function.
It is when a nucleon changes properties. Like a neutron changing into a proton.


21. What quantity is calculated from slope of the displacement versus time graph?
velocity
The release of a particle or photon from an UNSTABLE nucleus.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
Moment arm


22. Which type of radiation has the lowest energy?
Parallel. Because the plates are shared.
Only 1/2 a wavelength fits in the tube. L=wavelength/2
Pascal
Alpha


23. What is the area under the acceleration versus time graph?
Newton
E=kq/R^2
Joule
The CHANGE in velocity.


24. 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


25. What shapes are converging lenses?
Only 1/2 a wavelength fits in the tube. L=wavelength/2
But placing more obstacles in the path of the charge's flow.
A displacement must occur. ( W=Fd)
Lenses that are fatter in the middle than on the edges.


26. How can total momentum be calculated?
Adding the momentum of all the bodies.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)


27. What comprises alpha radiation?
convex mirrors are diverging mirrors.
The electron
The release of a Helium nuclei - 4 -2 He2+
Joule


28. S.I. unit of torque
Work
When it is on the same side as the image?
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.
N•m


29. What is the y intercept of the velocity time graph?
The initial velocity - (Vo in the formulas)
Concave
Magnitude and direction
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.


30. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
That the orbits of the electrons are like planets around the Sun.
Ohm's Law: V=IR
N•m


31. What is temperature?
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
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.
The measure of the average kinetic energy of the molecules.


32. 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?
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.
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 CHANGE in velocity.
Dark in the middle and alternating light and dark spots after that.


33. Describe the relationship between Qh - Qc - and W in a heat engine?
Work of a system is equal to 1-Qc/Qh
(1) Straight through the vertex. (2) Parallel then through the primary focus.
The PVT conditions change for a gas without changing the temperature.
convex mirrors are diverging mirrors.


34. What direction controls time in falling body and projectile motion problems?
Entropy always increases.
The thicker the wire - the lower the resistance.
Vertical direction
Heat - (the 'Q' variable) - is NEGATIVE when thermal energy is being REMOVED from a system.


35. What is conservation of energy and what is its significance?
Work by a system is positive when the gas expands. (The volume increases.)
Velocity has a direction and speed does not have direction.
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
Radio - Infrared - Visible - UltraViolet - X-Rays - Gamma Rays.


36. What is the relationship between speed - frequency - and wavelength?
Conservation of Energy ... because E=hf
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
wave speed = (wavelength)(frequency)
(1) The image is larger than the object: ho>hi. (2) image is upright.


37. Which kind of mirror can show a real image?
Atomic mass number minus atomic number.
Resistance: R=R1+R2+R3+...
The nucleus
Concave


38. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
Work of a system is equal to 1-Qc/Qh
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
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. 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


40. What two entities comprise a vector?
Magnitude and direction
Work is the change in kinetic energy. Work transfers energy to and from a body
The release of an energetic photon from an overly excited molecule.
A displacement must occur. ( W=Fd)


41. Under what conditions is heat negative?

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


42. What causes resistance?
Alpha - Beta - and Gamma
When the object is beyond the focus for a concave mirror.
Obstacles in the path of the flow of charges.
The electric field forces charges to move.


43. How is the net work of a system (gas) measured?
In front of the mirror - in the light.
Initial velocity
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
The release of an energetic photon from an overly excited molecule.


44. Under what conditions is work by a system ( gas) negative?
Lenses that are fatter in the middle than on the edges.
Work by a system is negative when the gas contracts. (The volume decreases.)
Atomic mass number minus atomic number.
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.


45. What is needed for electromagnetic induction to occur?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
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.
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Magnitude and direction


46. What do the period of pendulums and springs each depend on?
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
Work
When the body rests on a surface.
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


47. What does light absorption involve?
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


48. What doesn't change (speed - frequency - or wavelength) - when light moves from one medium to another?
The bouncing of light
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.
Alpha - Beta - and Gamma
frequency (Think of the color as not changing.)


49. Condition for no rotation
Electric potential is the potential energy associated with the electric force F=qE
Impulse is (force)(time)
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
Sum of the torques equal zero.


50. 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