Instructions:

• Answer 50 questions in 15 minutes.
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• 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 strong force?
Work
dU = zero. The change in temperature of the gas is zero.
m=(rho)V
THe force that holds the nucleus together.


2. Give an example of a transverse and a longitudinal wave.

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3. Formula for the electric force felt by a charged particle in an electric field.
Something other than zero.
Impulse
F=qE
Electric potential is the potential energy associated with the electric force F=qE


4. What is the binding energy?
KE = (3/2)kT
The energy required to remove an electron or nucleon from a molecule.
The centripetal force points along the radius towards the center of the circle.
Adding the momentum of all the bodies.


5. What does the pattern look like in a Young's Single Slit diffraction pattern?
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
(n1)sin(theta1) = (n2)sin(theta2)
Broad bright spot in the middle and alternating dark and light spots to the sides.
Work done 'BY' the gas.


6. How does the speed change when the pressure is decreased?
When the object is beyond the focus for a concave mirror.
Parallel. Because the plates are shared.
Speed ups
V=kq/R


7. What is an isotope?
F=qE
Conservation of Energy ... because E=hf
PV=nRT and PV=kT
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14


8. What does upward slope on a displacement versus time graph imply about the velocity.
But placing more obstacles in the path of the charge's flow.
The velocity is positive
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
DU = Q+W ...dU:of the environment = Q:from the environment + W:by the environment


9. What is the energy of a photon?

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10. How do you find the number of neutrons in an atom?
Atomic mass number minus atomic number.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
Converging lenses have a positive focal length.
Zero. Because the displacement is perpendicular to the force (centripetal force.)


11. What is the potential energy of a charge in an electric field?
g=zero so h=(Vyo)t
V=kq/R
When a body's speed is changing.
Pgh ..thats ('rho')(gravity's acceleration)(height)


12. What is the relationship between power - voltage and current?
Speed ups
That the orbits of the electrons are like planets around the Sun.
P=IV
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.


13. 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 centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
E=hf
But placing more obstacles in the path of the charge's flow.


14. S.I. unit of gravitational force
Parallel. Because the plates are shared.
Pascal
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Newton


15. What is the energy equation if a force (friction) through a distance results in heat and thus a change in temperature?
Velocity has a direction and speed does not have direction.
The body is moving at a constant velocity
The longer the length of wire - the higher the resistance.
KE=Work


16. Unit that means the same thing as Nm
Atmospheric pressure
The release of a particle or photon from an UNSTABLE nucleus.
Lenses that are fatter in the middle than on the edges.
Joule


17. What conditions are necessary to change the reflected ray's phase by 180°?

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18. What did Thompson discover?
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
The electron
The thicker the wire - the lower the resistance.


19. This is used to determine the speed of a fluid when the pipe slopes up or down.

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

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21. When is the image negative for mirrors?

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22. Unit of energy for electricity.
The measure of the average kinetic energy of the molecules.
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.
V - a Joule/Coulomb
Tesla


23. Formula for work by a car that changes speed on a horizontal road.
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)
W = KE:final - KE:initial
The transfer of thermal energy
When a body is moving at a constant velocity or not moving at all.


24. The speed of a ball when it lands at the same height it was thrown from.
Atmospheric pressure
Initial velocity
Work by a system is positive when the gas expands. (The volume increases.)
N•m


25. What are the three rules needed for mirrors - since not all three work every time?
Zero. Because the displacement is perpendicular to the force (centripetal force.)
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
The particle travels in a circle. Radius=momentum/qB
(1) Bounced off the vertex. (2) Parallel the through the focus. (3) Through the focus and parallel.


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

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27. What does light emission involve?
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Electromagnetic wave exits the electrons to a higher orbital. When the electron relaxes - a wavelength of light is given off.
Newton
Concave


28. What equation describes the speed in the x-direction of a projectile 't' seconds after it started moving?
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
V - a Joule/Coulomb
Work is positive when the force and displacement point in the same direction.
The graph of force vs displacement


29. What shape is a diverging lenses?
Lenses that are thinner in the middle than on the edges.
V - a Joule/Coulomb
The initial velocity - (Vo in the formulas)
Broad bright spot in the middle and alternating dark and light spots to the sides.


30. Force in terms of pressure
When a body is moving at a constant velocity or not moving at all.
According to Coulomb's Law - the new force is 6/4 times the old charge.
Force= Pressure/Area
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.


31. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving?
W = KE:final - KE:initial
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.


32. What is its impact on the first law of thermodynamics of an adiabatic process?
Convex
kg•m/s
Q=0 because thermal energy is not transfered between the system and its surroundings
Newton


33. Formula for the electric field at point in space for a single point charge.
KE=Work
(Cross-sectional Area)(Velocity)
E=kq/R^2
It is used in Lenz's Law to determine the change in flux of a conductor.


34. How is sum of force (net force) depicted in a free body diagram?
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Only 1/2 a wavelength fits in the tube. L=wavelength/2
(1) The image is larger than the object: ho>hi. (2) image is upright.
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.


35. What is force times the perpendicular distance?
dU = zero. The change in temperature of the gas is zero.
Energy and mass are equated by E=mc^2.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Torque


36. What is implied when an object is not accelerating in the x direction?
Impulse
the refracted ray bends TOWARDS the normal line.
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.
The body is moving at a constant velocity


37. What is the energy equation if you see a particle accelerated perpendicular to two charged plates - or the problem states that the particle is accelerated through a potential difference?

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38. What is force times time?
Q=0 because thermal energy is not transfered between the system and its surroundings
No image.
Provided experimental proof of the wave property of light.
Impulse


39. Which type of lenses have a POSITIVE focal length?
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)
Converging lenses have a positive focal length.
Weight ...w=mg
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.


40. Which type of lenses have a NEGATIVE focal length?
Diverging lenses have a negative focal length.
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Resistance: R=R1+R2+R3+...
The CHANGE in velocity.


41. In a pendulum or spring - what are the displacement - velocity - PE and KE at the equilibrium position?
The particle travels in a circle. Radius=momentum/qB
Displacement
A displacement must occur. ( W=Fd)
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.


42. What is electromagnetic induction?
Velocity has a direction and speed does not have direction.
Electromagnetic induction is the generation of an Emf by moving a conductor through a magnetic field. emf=change in flux/dt
Statistically speaking - energy flows from hot to cold.
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.


43. What shape is a converging mirrors?
Concave mirrors are converging mirrors.
The body is moving at a constant velocity
In front of the mirror - in the light.
Adding the momentum of all the bodies.


44. What is impulse?
N•m
The movement of charges is the current and it is measures by the number of charges per second at a point.
Vy=Vyo + gt ...Watch the signs.
Impulse is the change in momentum


45. What is the impact on the first law of thermodynamics for an isothermal process?
V=kq/R
dU = zero. The change in temperature of the gas is zero.
Adding the momentum of all the bodies.
Dark in the middle and alternating light and dark spots after that.


46. What does the term potential difference mean?
The electric field forces charges to move.
Work
Potential difference is the change in energy of a charged particle divided by its charge.
Concave


47. What are the three types of radiation?
The Law of reflection states that the incident angle of a wave is equal to the reflected angle.
Alpha - Beta - and Gamma
Velocity has a direction and speed does not have direction.
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.


48. What is an isothermal process - and what is its impact on the first law of thermodynamics?
The PVT conditions change for a gas without changing the temperature.
Alpha
The release of a Helium nuclei - 4 -2 He2+
m^3/s


49. What is the y intercept of the velocity time graph?
Displacement
Joule
Impulse
The initial velocity - (Vo in the formulas)


50. What is conservation of energy and what is its significance?
Convex
The electric field forces charges to move.
The nucleus
Sum of all the energy forms before a condition equals the sum of all the energy forms after the condition.