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. How is the force on a charged particle in a magnetic field creating the path calculated?
The electric field forces charges to move.
2(pi)R/T ...Circumference/Period
Pascal
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


2. How does thickness effect resistance?
Velocity has a direction and speed does not have direction.
The thicker the wire - the lower the resistance.
The refracted light ray is bent 90°. (Parallel to the interface surface.)
Zero.


3. When light travels from MORE dense to LESS dense mediums - how does the refracted ray bend in relation to the normal line?
Electric potential is the potential energy associated with the electric force F=qE
Convex
the refracted ray bends AWAY from the normal line.
Only 1/4 wavelength fits in the tube. L=wavelength/4


4. What is the electric field's magnitude inside of a container made from an electrical CONDUCTOR?
Something other than zero.
E=hf=hc/(wavelength)
Zero.
system is the gas being studied. Environment is the surroundings outside the gas.


5. Unit of electric field
The bouncing of light
Potential energy stored in gravity (PE = mgh)
Weber
N/C


6. How length effect resistance?
The longer the length of wire - the higher the resistance.
The thicker the wire - the lower the resistance.
The electron
Something other than zero.


7. What is the Bohr Model of the atom?
That the orbits of the electrons are like planets around the Sun.
Weight ...w=mg
frequency (Think of the color as not changing.)
Potential difference is the change in energy of a charged particle divided by its charge.


8. State the significance of Young's Experiment.
No image.
The higher the temperature the higher the resistance. They are proportional to each other.
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
Provided experimental proof of the wave property of light.


9. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
convex mirrors are diverging mirrors.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
V - a Joule/Coulomb


10. If you double the mass of one planet - triple the mass of another - and move them twice as far apart - what happens to the force of attraction between them?
g=zero so h=(Vyo)t
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
KE=(3/2)kT where k is Boltzman's constant
The new force is 2/4 or 1/2 times the old force. ...Because the force of gravity varies directly with the masses and inverse squared to the distance apart.


11. How does a wires composition effect resistance?

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12. What causes radioactivity?
It is when a nucleon changes properties. Like a neutron changing into a proton.
Newton
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 release of a particle or photon from an UNSTABLE nucleus.


13. Which kind of lens always has a virtual image?
Obstacles in the path of the flow of charges.
Diverging
The PVT conditions change for a gas without changing the temperature.
KE=(3/2)kT where k is Boltzman's constant


14. What causes resistance?
wave speed = (wavelength)(frequency)
V=Vo + at ...The word 'dropped' means no initial velocity.
The movement of charges is the current and it is measures by the number of charges per second at a point.
Obstacles in the path of the flow of charges.


15. 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?
Every point on a wave front is a secondary source.
E=V/d
Vertical direction
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.


16. Flow Rate
(Cross-sectional Area)(Velocity)
Current stays the same for resistors in series.
Atmospheric pressure
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)


17. What comprises beta radiation?
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
The refracted light ray is bent 90°. (Parallel to the interface surface.)
The release of an electron and antineutrino or the release of a positron and a neutrino.
Diverging


18. What direction controls time in falling body and projectile motion problems?
Vertical direction
It is the net force pointing towards the center.
The nucleus
When the body rests on a surface.


19. What is the relationship that describes the rate that work is done - or that energy is used?
(1) The image is larger than the object: ho>hi. (2) image is upright.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Power ... Power equals the change in energy over time.
A1v1=a2v2


20. What is the relationship between power - voltage and current?
P=IV
Provided experimental proof of the wave property of light.
Concave
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


21. Mathematically what does centripetal force represent and how is centripetal force calculated?

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22. What is the work done on a charged particle by the magnetic field? Why?
Gamma
N•m
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Impulse


23. What is a key requirement in order for work to be done?
A displacement must occur. ( W=Fd)
2(pi)R/T ...Circumference/Period
g=zero so h=(Vyo)t
The graph of force vs displacement


24. What kind of capacitor circuit adds to find the total capacitance?
W=qV
The nucleus
Parallel. Because the plates are shared.
(1) Straight through the vertex. (2) Parallel then through the primary focus.


25. What are the three types of radiation?
Concave mirrors are converging mirrors.
Alpha - Beta - and Gamma
Impulse is the change in momentum
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.


26. S.I. unit of flux
Alpha - Beta - and Gamma
Weber
The electric field forces charges to move.
(mg)sin(angle)


27. S.I. unit of work
Joule
wave speed = (wavelength)(frequency)
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.


28. S.I. unit of magnetism
Tesla
'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.
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
Zero. Because the displacement is perpendicular to the force (centripetal force.)


29. What is the direction of the centripetal acceleration?
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)
E=hf
Only 1/2 a wavelength fits in the tube. L=wavelength/2


30. What forces charges to move?
Velocity has a direction and speed does not have direction.
The electric field forces charges to move.
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.
Watt


31. What is the name given to the distance between the pivot point and applied perpendicular force?
(1) The image is larger than the object: ho>hi. (2) image is upright.
m^3/s
Moment arm
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2


32. What makes an image 'real?'
Pascal
the refracted ray bends AWAY from the normal line.
The light travels through the image.
Velocity has a direction and speed does not have direction.


33. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
The release of an energetic photon from an overly excited molecule.
Newton
N/C
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.


34. Gauge Pressure

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35. How does the speed change when the pressure is decreased?
The PVT conditions change for a gas without changing the temperature.
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.
Speed ups
It is when a nucleon changes properties. Like a neutron changing into a proton.


36. What is the area under the acceleration versus time graph?
The velocity is positive
The CHANGE in velocity.
Provided experimental proof of the wave property of light.
system is the gas being studied. Environment is the surroundings outside the gas.


37. Define mass in terms of density.
m=(rho)V
The release of an energetic photon from an overly excited molecule.
Energy and mass are equated by E=mc^2.
Obstacles in the path of the flow of charges.


38. What is ionization energy and how does it compare to the work function?
wave speed = (wavelength)(frequency)
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
When the object is beyond the focus for a concave mirror.
Statistically speaking - energy flows from hot to cold.


39. Pressure of an open container at the opening.
Change in voltage across the resistor or capacitor.
Speed ups
Atmospheric pressure
Bends waves around small objects and the interference of waves from a coherent sources.


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

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41. Under what conditions is mechanical work positive?
Alpha
Work is positive when the force and displacement point in the same direction.
The new force is 2/4 or 1/2 times the old force. ...Because the force of gravity varies directly with the masses and inverse squared to the distance apart.
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.


42. What shape is a converging mirrors?
Concave mirrors are converging mirrors.
The movement of charges is the current and it is measures by the number of charges per second at a point.
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.
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.


43. What is the area under any PV curve?

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44. What is an object placed when the distance between it and the mirror is positive?
In front of the mirror - in the light.
The longer the length of wire - the higher the resistance.
The centripetal force points along the radius towards the center of the circle.
When it is on the 'dark' side of the mirror. Opposite the light.


45. Continuity equation
A1v1=a2v2
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Moment arm
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.


46. What are the three rules needed for mirrors - since not all three work every time?
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.
W=qV
E=kq/R^2
g=zero so h=(Vyo)t


47. What are the differences and similarities between transverse and longitudinal waves?

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48. What is force times the perpendicular distance?
V=kq/R
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.
Torque
The longer the length of wire - the higher the resistance.


49. What is the 1st law of thermodynamics as applied to gases?
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment
Every point on a wave front is a secondary source.
Lenses that are fatter in the middle than on the edges.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14


50. How is tube length and wavelength related for a tube that is closed on ONE end?
The NET work BY a system is the area enclosed in a cycle on a PV diagram.
Broad bright spot in the middle and alternating dark and light spots to the sides.
The electric force (Coulomb's Law) can attract and repel and it depends on charge. Universal Gravity depends on mass and always attracts.
Only 1/4 wavelength fits in the tube. L=wavelength/4