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. Define Snell's law.
(n1)sin(theta1) = (n2)sin(theta2)
Zero.
(mg)sin(angle)
Joule


2. What is the area under the acceleration versus time graph?
Speed ups
Atmospheric pressure
Adding the momentum of all the bodies.
The CHANGE in velocity.


3. What are the three rules needed for mirrors - since not all three work every time?
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
x=Vo + ((1/2)g)sin(angle)t^2
Alpha
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


4. When are f - p - q - ho - hi - and M positive for mirrors?
When the object is beyond the focus for a concave mirror.
Work is positive when the force and displacement point in the same direction.
Adding the momentum of all the bodies.
Tesla


5. What do you know about two objects that are launched at different horizontal velocities?
They fall - vertically - the by the same amount in the same time.
the refracted ray bends AWAY from the normal line.
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
Vertical direction


6. When is the image negative for a lens?
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.
When it is on the same side as the image?
Impulse is (force)(time)
W=qV


7. What is meant by the terms system and environment?
The refracted light ray is bent 90°. (Parallel to the interface surface.)
The force is perpendicular to the motion to get a circular path of motion. (Think about centripetal force.)
P=IV
system is the gas being studied. Environment is the surroundings outside the gas.


8. What is an object placed when the distance between it and the mirror is positive?
Every point on a wave front is a secondary source.
When it is on the same side as the image?
The release of a Helium nuclei - 4 -2 He2+
In front of the mirror - in the light.


9. How does temperature effect resistance?
Speed ups
Lenses that are fatter in the middle than on the edges.
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
The higher the temperature the higher the resistance. They are proportional to each other.


10. What is the impact on the first law of thermodynamics for an isothermal process?
Lenses that are fatter in the middle than on the edges.
ROY-G-BIV: Red - Orange - Yellow - Green - Blue - Indigo - Violet
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
dU = zero. The change in temperature of the gas is zero.


11. How do you find the number of neutrons in an atom?
Every point on a wave front is a secondary source.
P=IV
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
Atomic mass number minus atomic number.


12. Under what conditions is heat positive?

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13. What is the potential energy of a charge in an electric field?
Resistance: R=R1+R2+R3+...
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
Transverse waves: The displacement is perpendicular to the wave's motion. Longitudinal waves: The displacement is in the direction of the wave's motion.
V=kq/R


14. What is the electric field's magnitude inside of a container made from an electrical INSULATOR?
KE=(3/2)kT where k is Boltzman's constant
Something other than zero.
It is an arrow that DOES NOT touch the body. Recall that the net force is the answer when all the forces are added up.
The measure of the average kinetic energy of the molecules.


15. Which type of radiation has the highest energy?
V - a Joule/Coulomb
Gamma
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.
Vertical direction


16. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
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.
When the body rests on a surface.
Diverging lenses have a negative focal length.
Resistance: R=R1+R2+R3+...


17. What two things must be true for a positive magnification?
(1) The image is larger than the object: ho>hi. (2) image is upright.
Work is positive when the force and displacement point in the same direction.
The longer the length of wire - the higher the resistance.
(1) Straight through the vertex. (2) Parallel then through the primary focus.


18. Formula for the electric force felt by a charged particle in an electric field.
The higher the temperature the higher the resistance. They are proportional to each other.
Work by a system is positive when the gas expands. (The volume increases.)
F=qE
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.


19. How length effect resistance?
The thicker the wire - the lower the resistance.
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
Tesla
The longer the length of wire - the higher the resistance.


20. What does light emission involve?
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 movement of charges is the current and it is measures by the number of charges per second at a point.
Force lifting a body when it is in a fluid.
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.


21. What is work energy theorem and what is its significance?
V - a Joule/Coulomb
Light must travel from more to less dense so the refracted ray can bend away from the normal.
It is an arrow that DOES NOT touch the body. Recall that the net force is the answer when all the forces are added up.
Work is the change in kinetic energy. Work transfers energy to and from a body


22. Formula for work by a car that changes speed on a horizontal road.
The thicker the wire - the lower the resistance.
2(pi)R/T ...Circumference/Period
But placing more obstacles in the path of the charge's flow.
W = KE:final - KE:initial


23. Condition for no rotation
Weber
Current stays the same for resistors in series.
Moment arm
Sum of the torques equal zero.


24. What is the y intercept of the velocity time graph?
The initial velocity - (Vo in the formulas)
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.
Adding the momentum of all the bodies.
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.


25. What is conservation of energy and what is its significance?
Ohm's Law: V=IR
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.
The PVT conditions change for a gas without changing the temperature.
Concave


26. Work is the area under which curve?
Pgh ..thats ('rho')(gravity's acceleration)(height)
The graph of force vs displacement
V=kq/R
A displacement must occur. ( W=Fd)


27. Average kinetic energy of an ideal gas's SINGLE molecule.
When it is on the same side as the image?
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
E=V/d
KE = (3/2)kT


28. This is the gauge pressure when under water.
(rho)gh
That the orbits of the electrons are like planets around the Sun.
An adiabatic process is where no thermal energy is transfered between the system and its surroundings.
The charge on each capacitor.


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

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30. What kind of image do you get when the object is placed at the focus?
frequency (Think of the color as not changing.)
Electric potential is the potential energy associated with the electric force F=qE
No image.
THe force that holds the nucleus together.


31. When is sum of force (net force) zero?
Gamma
When a body is moving at a constant velocity or not moving at all.
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.


32. Which type of lenses have a NEGATIVE focal length?
Diverging lenses have a negative focal length.
The bending of light
The CHANGE in velocity.
V=Vo + at ...The word 'dropped' means no initial velocity.


33. When light travels from MORE dense to LESS dense mediums - how does the refracted ray bend in relation to the normal line?
the refracted ray bends AWAY from the normal line.
But placing more obstacles in the path of the charge's flow.
When the object is beyond the focus for a concave mirror.
The refracted light ray is bent 90°. (Parallel to the interface surface.)


34. What force is always present - and what is its equation?
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
The light travels through the image.
Vy=Vyo + gt ...Watch the signs.
Weight ...w=mg


35. What is the relationship between voltage - current and resistance?

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36. What comprises alpha radiation?
The release of a Helium nuclei - 4 -2 He2+
When a body's speed is changing.
Work
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)


37. What direction controls time in falling body and projectile motion problems?
The CHANGE in velocity.
Work is the change in kinetic energy. Work transfers energy to and from a body
Work of a system is equal to 1-Qc/Qh
Vertical direction


38. What is a key requirement in order for work to be done?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
When it is on the 'dark' side of the mirror. Opposite the light.
A displacement must occur. ( W=Fd)
Work done 'BY' the gas.


39. How much work is the work done on an object moving in a circle? Why?
The body is moving at a constant velocity
Zero. Because the displacement is perpendicular to the force (centripetal force.)
Ohm's Law: V=IR
The movement of charges is the current and it is measures by the number of charges per second at a point.


40. Under what conditions is heat negative?

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41. What is the strong force?
Potential energy stored in gravity (PE = mgh)
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.
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 force that holds the nucleus together.


42. 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.)
V=kq/R
Work is positive when the force and displacement point in the same direction.
How quickly you change velocity.


43. Electric force felt by a charge due to another charge.
How quickly you change velocity.
It is the time for 1/2 a substance to decay by radioactive processes.
F=kq1q2/R^2
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)


44. Unit of electric field
N/C
When it is on the 'dark' side of the mirror. Opposite the light.
The centripetal force points along the radius towards the center of the circle.
The velocity is positive


45. What stays the same for resistors or capacitors in parallel?
Adding the momentum of all the bodies.
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
wave speed = (wavelength)(frequency)
Change in voltage across the resistor or capacitor.


46. 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.
W=qV where 'W' is the work - 'q' is the charge and 'V' is the potential difference measured in Volts.
The CHANGE in velocity.
The light travels through the image.


47. What is the area under the velocity time graph?
Displacement
Something other than zero.
Convex
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.


48. What is an indication of a change in the internal energy?

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

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50. What is the Bohr Model of the atom?
The charge on each capacitor.
That the orbits of the electrons are like planets around the Sun.
Statistically speaking - energy flows from hot to cold.
V - a Joule/Coulomb