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SAT Subject Test: Physics Formulas

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. Internal energy....equals?
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
F=mv²/ r
Q=m*L (where L is the latent heat of fusion or vaporization)
?IE= - W (work)

2. Gravitational constant
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)
Etotal= E rest + KE= mc² + (Y-1)mc²
?= 4L + 1.6d
G= 6.67 * 10?¹¹ Nm²/kg²

3. Binding energy formula
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
V= 331 m/s + (.6 m/s°C)Temperature
EMFavg. induced= -?Fb/ ?t (= - change in mag flux/change in time)
Ebinding= ?m * c² (= (?m)c²)

4. Formula for diffraction pattern - Anti-node to Anti-node (A-A)
Negative - focus behind the lens (= virtual image)
Voltage=PE/q (remember Joules/Coulomb= volt)
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
N?/ d= x/L (where x =distance between c and the anti-node - L =distance from screen to source - n=number anti-node - and d = distance between the slits)

5. Relativistic formula for time
V=IR
Fnet=ma
K= 9 * 10? Nm²/C²
?Tstationary= Y (?Tmoving)

6. Voltage formula (think units of volts are what?) (NOT in terms of I and R)
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted
G= 6.67 * 10?¹¹ Nm²/kg²
Voltage=PE/q (remember Joules/Coulomb= volt)
M= -di/do (=-hi/ho)

7. Relativistic formula for velocity
Vstationary obj.= [u+v] / [1 + uv/c²] (where u is velocity of large object - and v is velocity of "thrown" object relative to large object)
Intensity a Amplitude/ d²
The volume of the object.
G= 6.67 * 10?¹¹ Nm²/kg²

8. Mass defect explanation

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9. Threshold frequency explanation?
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted
Voltage=PE/q (remember Joules/Coulomb= volt)
Vfinal²=V0²+ 2ad
KE= (Y-1)mc² (= (Y-1)E)

10. (Full) Displacement formula
E0= 8.85 * 10?¹² C²/(Nm²)
W= - kq1q2 (1/r2 - 1/r1)
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)

11. Total KE formula
C= 3*108 m/s
Etotal= E rest + KE= mc² + (Y-1)mc²
The incident angle at which total internal reflection occurs (use ?r=90°)
KE= (Y-1)mc² (= (Y-1)E)

12. ONE END CAPPED PIPE FREQUENCY (Frequency/Harmonic series of a pipe closed at one ned)
E=hf (= Planck's constant*frequency)
Q=mc?T (where T is temperature)
Y= 1/ v(1-(v/c)²)
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)

13. Heat formula
Q=mc?T (where T is temperature)
F= (9/5)C+ 32
Shorter ? - less diffraction - bigger shadow.
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.

14. Ideal gas law
KE= (Y-1)mc² (= (Y-1)E)
Felec=qE=[kq1q2]/r²
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
PV=nRT (p= pressure - V= volume - n= number of moles - T= temperature in KELVIN - R= .0821)

15. Formula for magnetic flux?
Ebinding= ?m * c² (= (?m)c²)
1/f= 1/di + 1/do
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
Q=mc?T (where T is temperature)

16. Correction factor for wavelength in a diffraction experiment (probably don't have to know)
Vfinal²=V0²+ 2ad
?= 4L + 1.6d
W=(Force parallel)(distance)= Pressure ? V (change in volume)= qvoltage
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)

17. Torque formula
PE=mgh
PV=nRT (p= pressure - V= volume - n= number of moles - T= temperature in KELVIN - R= .0821)
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.

18. Planck's constant in electronvolts* seconds?
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
4.14 10?¹5 eVs
Voltage=PE/q (remember Joules/Coulomb= volt)
E0= 8.85 * 10?¹² C²/(Nm²)

19. mass of a proton/neutron (there's a slight difference but ignore it - neutron has slightly more mass)
C= 3*108 m/s
1.67*10?²7kg
?p=f?t (where f is AVERAGE force and t is how long force is applied)
Vstationary obj.= [u+v] / [1 + uv/c²] (where u is velocity of large object - and v is velocity of "thrown" object relative to large object)

20. Moment of Inertia (a.k.a. rotational mass)
V=f?
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
I=mr²
?Tstationary= Y (?Tmoving)

21. Magnification equation
6.6310 ?³4 Js
M= -di/do (=-hi/ho)
F= (9/5)C+ 32
4.14 10?¹5 eVs

22. Heat of fusion/vaporization fromula
En= [Z²/n² * -13.6ev ] (Z is number of protons in atom's nucleus - n is energy level number)
E0= 8.85 * 10?¹² C²/(Nm²)
M= -di/do (=-hi/ho)
Q=m*L (where L is the latent heat of fusion or vaporization)

23. Activity of a radioactive sample formula? (probably don't have to know)
Vstationary obj.= [u+v] / [1 + uv/c²] (where u is velocity of large object - and v is velocity of "thrown" object relative to large object)
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)
P=IV=I²R=V² /R = Fd/t= Force*velocity
F= (9/5)C+ 32

24. ß? decay?
W= - kq1q2 (1/r2 - 1/r1)
V=f?
Momentum is always conserved in the absence of an outside force
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)

25. Work function F is..?
E0= 8.85 * 10?¹² C²/(Nm²)
?IE= - W (work)
Large/high
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.

26. Index of refraction formula
A=v²/ r
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.
W= - kq1q2 (1/r2 - 1/r1)
N= C/velocity.

27. K constant for electric field formula?
K= 9 * 10? Nm²/C²
For every action there is an equal and opposite reaction
1/f= 1/di + 1/do
?=h/p (where p= MOMENTUM=m?v - and h is planck's constant)

28. Threshold frequency formula?

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29. Formula for velocity of waves?
For every action there is an equal and opposite reaction
Zero.
V=f?
Ni sin?i=nrsin?r

30. Elastic potential energy for a spring formula
E= kq/r² (= f/q)
931MeV=1amu
PEspring= 1/2 kx² (K is spring constant - X is distance spring compressed)
Q=m*L (where L is the latent heat of fusion or vaporization)

31. Magnetic force formula (for particle)?
(n-1/2)?/ d= x/L (where x =distance between c and the anti-node - L =distance from screen to source - n=number anti-node - and d = distance between the slits)
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)
Intensity a Amplitude/ d²
Large/high

32. Law of reflection
Threshold frequency=F/h (= work functions/planck's constant)
Angle of incidence=Angle of reflection
P=mv (?p=m?v)
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted

33. High frequency wave shave...
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
Shorter ? - less diffraction - bigger shadow.
P=mv (?p=m?v)
Induced current will flow opposite direction of magnetic flux.

34. Formula for energy of a photon?

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35. Maximum KE with which an emitted electron leaves is...?
M= -di/do (=-hi/ho)
Longer ? - larger diffraction - smaller shadow.
E= kq/r² (= f/q)
KEmax= hf-F (= E-F= Energy of a photon - work function)

36. OPEN PIPE FREQUENCY (Frequency/Harmonic series of a pipe opened at both ends)
Eff= 1- Qc/Qh = 1- Tc/Th
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)
Beat frequency= |F1-F2|
The incident angle at which total internal reflection occurs (use ?r=90°)

37. Beat frequency
Eff= 1- Qc/Qh = 1- Tc/Th
Voltage=PE/q (remember Joules/Coulomb= volt)
F=ILBsin? (?= angle btw. L and B)
Beat frequency= |F1-F2|

38. Sign of focus for concave lens?
Positive - focus in front of the lens (=real image)
F=GM1M2/r²
?p=f?t (where f is AVERAGE force and t is how long force is applied)
Induced current will flow opposite direction of magnetic flux.

39. Conservation of momentum
Shorter ? - less diffraction - bigger shadow.
?p=f?t (where f is AVERAGE force and t is how long force is applied)
Longer ? - larger diffraction - smaller shadow.
Momentum is always conserved in the absence of an outside force

40. Centripetal force formula
Q=m*L (where L is the latent heat of fusion or vaporization)
Fb= mass of displaced fluid * gravity
F=mv²/ r
Beat frequency= |F1-F2|

41. Capacitance constant
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)
For every action there is an equal and opposite reaction
E0= 8.85 * 10?¹² C²/(Nm²)

42. Light intensity is proportional to..
Intensity a Amplitude/ d²
P=mv (?p=m?v)
Q=m*L (where L is the latent heat of fusion or vaporization)
F=mv²/ r

43. If speed is high - index of refraction is....
F=mv²/ r
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)
PV=nRT (p= pressure - V= volume - n= number of moles - T= temperature in KELVIN - R= .0821)
Low

44. Magnetic force formula (for wire)?
1.6*10?¹? C
KE= (Y-1)mc² (= (Y-1)E)
Longer ? - larger diffraction - smaller shadow.
F=ILBsin? (?= angle btw. L and B)

45. Faraday's law
En= [Z²/n² * -13.6ev ] (Z is number of protons in atom's nucleus - n is energy level number)
1.6*10?¹? C
Zero.
EMFavg. induced= -?Fb/ ?t (= - change in mag flux/change in time)

46. Kinetic Energy formula
Eff= 1- Qc/Qh = 1- Tc/Th
Intensity a Amplitude/ d²
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
KE=1/2mv²

47. (Full/Final) Velocity formula
Momentum is always conserved in the absence of an outside force
Vfinal= V0 +at
6.6310 ?³4 Js
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V

48. magnitude of charge on electron/proton
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)
Beat frequency= |F1-F2|
Vstationary obj.= [u+v] / [1 + uv/c²] (where u is velocity of large object - and v is velocity of "thrown" object relative to large object)
1.6*10?¹? C

49. Law of refraction
Vstationary obj.= [u+v] / [1 + uv/c²] (where u is velocity of large object - and v is velocity of "thrown" object relative to large object)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
Ni sin?i=nrsin?r
C= Q/V = e0 *A/d

50. Energy of an emitted photon formula?
For every action there is an equal and opposite reaction
V=IR
PEspring= 1/2 kx² (K is spring constant - X is distance spring compressed)
Energy of emitted photon = E2-E1 (=Energy level higher- Energy level lower)