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 is the component of 'mg' parallel to a slope?
m=(rho)V
The bouncing of light
(mg)sin(angle)
V=Vo + at ...The word 'dropped' means no initial velocity.


2. What is the relationship that describes the rate that work is done - or that energy is used?
Power ... Power equals the change in energy over time.
wave speed = (wavelength)(frequency)
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14
Vy=Vyo + gt ...Watch the signs.


3. What comprises alpha radiation?
The release of a Helium nuclei - 4 -2 He2+
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)
'q' is a single particle's charge and 'Q' is the sum of all the charges. Q=q1+q2+q3+q4...
Energy and mass are equated by E=mc^2.


4. Which type of lenses have a NEGATIVE focal length?
Diverging lenses have a negative focal length.
Dark in the middle and alternating light and dark spots after that.
m^3/s
Work by a system is positive when the gas expands. (The volume increases.)


5. What causes resistance?
Obstacles in the path of the flow of charges.
Work is positive when the force and displacement point in the same direction.
x=(1/2)at^2 Remember - the word 'dropped' implies no initial velocity.
THe force that holds the nucleus together.


6. What is the relationship between energy - frequency - and wavelength in any wave?
E=hf=hc/(wavelength)
Magnitude and direction
Tesla
The force is perpendicular to the motion. This always results in a curved path. (Open right hand rule)


7. 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


8. What is the Bohr Model of the atom?
Pgh ..thats ('rho')(gravity's acceleration)(height)
V=kq/R
Lenses that are fatter in the middle than on the edges.
That the orbits of the electrons are like planets around the Sun.


9. S.I. unit of momentum
The electric field forces charges to move.
A displacement must occur. ( W=Fd)
kg•m/s
N/C


10. Define diffraction
Converging lenses have a positive focal length.
Newton
Bends waves around small objects and the interference of waves from a coherent sources.
The initial velocity - (Vo in the formulas)


11. 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.
Only 1/4 wavelength fits in the tube. L=wavelength/4
Broad bright spot in the middle and alternating dark and light spots to the sides.
Obstacles in the path of the flow of charges.


12. 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?

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


13. Define reflection
Tesla
The bouncing of light
frequency (Think of the color as not changing.)
Entropy always increases.


14. How does the closed right hand rule work in electromagnetic induction?

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


15. What is meant by the terms system and environment?
The release of a Helium nuclei - 4 -2 He2+
Joule
system is the gas being studied. Environment is the surroundings outside the gas.
F=qE


16. What is the path of a charged particle in a magnetic field?
Newton
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.
A potential difference and a flow and energized charges.
The particle travels in a circle. Radius=momentum/qB


17. What comprises gamma decay?
The release of an electron and antineutrino or the release of a positron and a neutrino.
The electron
Statistically speaking - energy flows from hot to cold.
The release of an energetic photon from an overly excited molecule.


18. How does the speed change when the pressure is decreased?
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
Speed ups
F=kq1q2/R^2
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.


19. Energy of a SINGLE photon
The volume under water
Bends waves around small objects and the interference of waves from a coherent sources.
E=hf
Newton


20. What is force times time?
When it is on the 'dark' side of the mirror. Opposite the light.
Impulse
Vy=Vyo + gt ...Watch the signs.
wave speed = (wavelength)(frequency)


21. What is the direction of the centripetal acceleration?
Potential difference is the change in energy of a charged particle divided by its charge.
Alpha
Work is positive when the force and displacement point in the same direction.
The centripetal acceleration points along the radius towards the center of the circle. (Just like the centripetal force.)


22. What causes radioactivity?
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Weight ...w=mg
The release of a particle or photon from an UNSTABLE nucleus.
Lenses that are thinner in the middle than on the edges.


23. What is mass energy equivalence?
frequency (Think of the color as not changing.)
Energy and mass are equated by E=mc^2.
Current stays the same for resistors in series.
The bending of light


24. What are the three types of radiation?
Current stays the same for resistors in series.
Alpha - Beta - and Gamma
'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.
E=hf ...E=energy of a single photon (J) - h = Plank's constant - f=frequency (Hz)


25. What is work energy theorem and what is its significance?
Work is the change in kinetic energy. Work transfers energy to and from a body
The PVT conditions change for a gas without changing the temperature.
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.
Same number of protons by a different number of neutrons. e.g. Carbon-12 versus Carbon-14


26. How length effect resistance?
The initial velocity - (Vo in the formulas)
Work by a system is negative when the gas contracts. (The volume decreases.)
The longer the length of wire - the higher the resistance.
x=Vo + ((1/2)g)sin(angle)t^2


27. Under what conditions does entropy increase?
Entropy always increases.
A1v1=a2v2
According to Coulomb's Law - the new force is 6/4 times the old charge.
Pgh ..thats ('rho')(gravity's acceleration)(height)


28. S.I. unit of work
The initial velocity - (Vo in the formulas)
Joule
It is the time for 1/2 a substance to decay by radioactive processes.
Force lifting a body when it is in a fluid.


29. Under what conditions is mechanical work positive?
Work is positive when the force and displacement point in the same direction.
Work by a system is positive when the gas expands. (The volume increases.)
Only 1/2 a wavelength fits in the tube. L=wavelength/2
In front of the mirror - in the light.


30. What is the derived equation for the ACCELERATION of gravity in terms of m and 'r' squared?
Work by a system is negative when the gas contracts. (The volume decreases.)
Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
Lost kinetic energy is work. It is calculated from Fd or KE:final - KE:initial
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2


31. S.I. unit of torque
Velocity has a direction and speed does not have direction.
N•m
The acceleration is towards the center. It is supplied by the normal force and points towards the center.
The PVT conditions change for a gas without changing the temperature.


32. How does impulse relate to force?
When the body rests on a surface.
g=zero so h=(Vyo)t
Displacement
Impulse is (force)(time)


33. 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


34. What is the formula relating emf and voltage?
Work is positive when the force and displacement point in the same direction.
The measure of the average kinetic energy of the molecules.
The centripetal force is the net force. It's magnitude is calculated from F=ma where 'a' is the centripetal force.
V=E - IR V=terminal voltage (Volts) - E = emf: electromotiveforce (Volts) - IR = Internal drop in energy per charge (Volts)


35. What are the two forms of the ideal gas law?
E=kq/R^2
The incoming light (electromagnetic wave) has the same frequency as some of the electrons.
Pascal
PV=nRT and PV=kT


36. What is the area under the velocity time graph?
G(M:earth)/r^2 ...force of gravity = G(M:earth)(M:body)/r^2
Longitudinal Wave: Sound wave - Transverse Wave: Light wave - 'The Wave' in a a crowd at a porting event.
(1) Straight through the vertex. (2) Parallel then through the primary focus.
Displacement


37. What is needed for electromagnetic induction to occur?
When it is on the same side as the image?
Atmospheric pressure
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 release of an electron and antineutrino or the release of a positron and a neutrino.


38. Define Snell's law.
The refracted light ray is bent 90°. (Parallel to the interface surface.)
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.
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.
(n1)sin(theta1) = (n2)sin(theta2)


39. What is the y intercept of the velocity time graph?
Pendulums depend on the length of the arm and the pull of gravity. springs depend on mass and the spring constant.
C=kEA/d: Increase the area of the plates - decrease the distance between the plates -and increase the dielectric constant between the plates.
Newton
The initial velocity - (Vo in the formulas)


40. 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?
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.
Joule
wave speed = (wavelength)(frequency)
That the orbits of the electrons are like planets around the Sun.


41. How do you find the number of neutrons in an atom?
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 release of a Helium nuclei - 4 -2 He2+
Atomic mass number minus atomic number.
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.


42. How can total momentum be calculated?
Atomic number is the number of protons. Atomic mass number is the number of nucleons - (protons and neutrons.)
Adding the momentum of all the bodies.
Energy and mass are equated by E=mc^2.
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.


43. What is acceleration?
x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
Work is positive when the force and displacement point in the same direction.
m=(rho)V
How quickly you change velocity.


44. What is the impact on the first law of thermodynamics for an isothermal process?
dU = zero. The change in temperature of the gas is zero.
ZERO. Because the force is perpendicular to the displacement . (Open right hand rule.)
Newton
It is the time for 1/2 a substance to decay by radioactive processes.


45. What is the name given to the distance between the pivot point and applied perpendicular force?
Pgh ..thats ('rho')(gravity's acceleration)(height)
Moment arm
Impulse is the change in momentum
Weight ...w=mg


46. Continuity equation
A1v1=a2v2
V - a Joule/Coulomb
the refracted ray bends TOWARDS the normal line.
V=kq/R


47. Formula for work as a charged particle travels across two charged plates
Work by a system is positive when the gas expands. (The volume increases.)
convex mirrors are diverging mirrors.
W=qV
When the body rests on a surface.


48. S.I. unit of power
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
Convex
Watt
Pascal


49. Gauge Pressure

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


50. When light travels from LESS dense to a MORE dense mediums - how does the refracted ray bend in relation to the normal line?
the refracted ray bends TOWARDS the normal line.
Tesla
A1v1=a2v2
(rho)gh