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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. Magnification equation
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)
The incident angle at which total internal reflection occurs (use ?r=90°)
M= -di/do (=-hi/ho)
PEspring= 1/2 kx² (K is spring constant - X is distance spring compressed)

2. Formula for magnetic flux?
Angle of incidence=Angle of reflection
Intensity a Amplitude/ d²
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
E= kq/r² (= f/q)

3. High frequency wave shave...
Beat frequency= |F1-F2|
Shorter ? - less diffraction - bigger shadow.
E0= 8.85 * 10?¹² C²/(Nm²)
PV/nT'= p'V'n'T' (p=pressure - V= VOLUME - T= temperature)

4. Formula for electric potential energy?
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
1.67*10?²7kg
R= ?L/A = (resistivity)(length of wire) / (cross sectional Area)
Threshold frequency=F/h (= work functions/planck's constant)

5. Work formula
KE=1/2mv²
Length stationary=Length moving/Y
?IE= - W (work)
W=(Force parallel)(distance)= Pressure ? V (change in volume)= qvoltage

6. Correction factor for wavelength in a diffraction experiment (probably don't have to know)
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
V=IR
?= 4L + 1.6d
Positive - focus in front of the lens (=real image)

7. ONE END CAPPED PIPE FREQUENCY (Frequency/Harmonic series of a pipe closed at one ned)
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
F= (9/5)C+ 32
E= V/d
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)

8. If speed is slow/low - index of refraction is...
Distance= velocity * time
Felec=qE=[kq1q2]/r²
Induced current will flow opposite direction of magnetic flux.
Large/high

9. Relativistic factor Y formula
Y= 1/ v(1-(v/c)²)
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)
M= -di/do (=-hi/ho)
1.67*10?²7kg

10. Conservation of momentum
F= (9/5)C+ 32
Momentum is always conserved in the absence of an outside force
C= Q/V = e0 *A/d
Product of each lens's magnification

11. If you drop an object into water the volume displaced equals...
1.67*10?²7kg
F= (9/5)C+ 32
Fb= mass of displaced fluid * gravity
The volume of the object.

12. Magnetic force formula (for particle)?
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)
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)
KE=1/2mv²
931MeV=1amu

13. Formula for energy levels within any atom?

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14. ß? decay?
Vfinal²=V0²+ 2ad
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
P=IV=I²R=V² /R = Fd/t= Force*velocity

15. How to find total magnification?

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16. mass of a proton/neutron (there's a slight difference but ignore it - neutron has slightly more mass)
1.67*10?²7kg
For every action there is an equal and opposite reaction
Vfinal= V0 +at
Voltage=PE/q (remember Joules/Coulomb= volt)

17. Apparent weight (weight of submerged object)
C= 3*108 m/s
Apparent weight = Fb- weight= (mfg) - (m0g) = (mass of displaced fluid gravity) - (initial mass of object while hanging in air gravity) = (DfVfg)- (DoVog)
Large/high
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)

18. magnitude of charge on electron/proton
1.67*10?²7kg
1.6*10?¹? C
Atom + electron--> Neutron (the addition of an electron - °?1e - causes a proton to change into a neutron - i.e. PROTON TRANSFORMS)
Zero.

19. Moment of Inertia (a.k.a. rotational mass)
W=qVoltage. (think C* J/C and C's cancel out)
I=mr²
C= Q/V = e0 *A/d
PE=mgh

20. Relativistic formula for velocity
G= 6.67 * 10?¹¹ Nm²/kg²
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)
Induced current will flow opposite direction of magnetic flux.
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted

21. Light intensity is proportional to..
Intensity a Amplitude/ d²
P=mv (?p=m?v)
Zero.
C= 3*108 m/s

22. Law of reflection
Apparent weight = Fb- weight= (mfg) - (m0g) = (mass of displaced fluid gravity) - (initial mass of object while hanging in air gravity) = (DfVfg)- (DoVog)
E0= 8.85 * 10?¹² C²/(Nm²)
Angle of incidence=Angle of reflection
Shorter ? - less diffraction - bigger shadow.

23. Formula for how velocity changes in air? (probably don't have to know)
Shorter ? - less diffraction - bigger shadow.
4.14 10?¹5 eVs
V= 331 m/s + (.6 m/s°C)Temperature
Eff= 1- Qc/Qh = 1- Tc/Th

24. Gravitational constant
Momentum is always conserved in the absence of an outside force
V=IR
G= 6.67 * 10?¹¹ Nm²/kg²
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)

25. deBroglie wavelength explanation
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
Difference between mass of nucleus and sum of it's constituent nucleons (protons/neutrons ...WHY?) energy lost when atom created. (That energy lost is the same energy it takes to break a nucleus into separate protons and neutrons)
PV/nT'= p'V'n'T' (p=pressure - V= VOLUME - T= temperature)

26. Work performed by charge displacement? (hopefully...won't have to know)
1/f= 1/di + 1/do
KEmax= hf-F (= E-F= Energy of a photon - work function)
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
W= - kq1q2 (1/r2 - 1/r1)

27. Total KE formula
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
Etotal= E rest + KE= mc² + (Y-1)mc²
?IE= - W (work)
PV/nT'= p'V'n'T' (p=pressure - V= VOLUME - T= temperature)

28. (Full) Displacement formula
1.6*10?¹? C
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
KE= (Y-1)mc² (= (Y-1)E)
Felec=qE=[kq1q2]/r²

29. Relativistic formula for (kinetic) energy
KE= (Y-1)mc² (= (Y-1)E)
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
F=ILBsin? (?= angle btw. L and B)

30. Graviational force formula
Distance= velocity * time
Induced current will flow opposite direction of magnetic flux.
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
F=GM1M2/r²

31. Law of refraction
W= - kq1q2 (1/r2 - 1/r1)
Ni sin?i=nrsin?r
Difference between mass of nucleus and sum of it's constituent nucleons (protons/neutrons ...WHY?) energy lost when atom created. (That energy lost is the same energy it takes to break a nucleus into separate protons and neutrons)
Longer ? - larger diffraction - smaller shadow.

32. Binding energy explanation
Distance= velocity * time
Felec=qE=[kq1q2]/r²
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)
?IE= - W (work)

33. Elastic potential energy for a spring formula
PE=mgh
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
PEspring= 1/2 kx² (K is spring constant - X is distance spring compressed)
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)

34. Kinetic Energy formula
C= Q/V = e0 *A/d
Length stationary=Length moving/Y
KE=1/2mv²
Voltage=PE/q (remember Joules/Coulomb= volt)

35. Work function F is..?
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)
Distance= velocity * time
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.

36. energy in a reaction q formula?
V= 331 m/s + (.6 m/s°C)Temperature
Intensity a Amplitude/ d²
Eff= 1- Qc/Qh = 1- Tc/Th
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)

37. Formula for velocity of waves?
1/f= 1/di + 1/do
P=IV=I²R=V² /R = Fd/t= Force*velocity
C= 3*108 m/s
V=f?

38. OPEN PIPE FREQUENCY (Frequency/Harmonic series of a pipe opened at both ends)
Shorter ? - less diffraction - bigger shadow.
Low
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)

39. New/old gas formula?

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40. Capacitance formula? (there are two)
Beat frequency= |F1-F2|
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)
Q=m*L (where L is the latent heat of fusion or vaporization)
C= Q/V = e0 *A/d

41. What is the apparent weight of a floating object?
E= V/d
Zero.
A=v²/ r
6.6310 ?³4 Js

42. Newton's first law (Law of...)
The incident angle at which total internal reflection occurs (use ?r=90°)
Zero.
Law of inertia. Object in motion stays in motion unless acted upon by an outside force.
Vfinal= V0 +at

43. Potential Energy formula
PE=mgh
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)
E= kq/r² (= f/q)
(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)

44. Right-hand rule
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.
PV/nT'= p'V'n'T' (p=pressure - V= VOLUME - T= temperature)
Difference between mass of nucleus and sum of it's constituent nucleons (protons/neutrons ...WHY?) energy lost when atom created. (That energy lost is the same energy it takes to break a nucleus into separate protons and neutrons)
Felec=qE=[kq1q2]/r²

45. Distance formula?
Distance= velocity * time
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
E= V/d
Momentum is always conserved in the absence of an outside force

46. Converting Fahrenheit to Celsius
Eff= 1- Qc/Qh = 1- Tc/Th
For every action there is an equal and opposite reaction
N= C/velocity.
F= (9/5)C+ 32

47. Magnetic force formula (for wire)?
Y= 1/ v(1-(v/c)²)
For every action there is an equal and opposite reaction
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
F=ILBsin? (?= angle btw. L and B)

48. Centripetal force formula
F=mv²/ r
?V2/?V1= N2/N1 (if secondary greater than primary it's a step-up transformer).
Fnet=ma
M= -di/do (=-hi/ho)

49. Electric force formula? (two)
1/f= 1/di + 1/do
Beat frequency= |F1-F2|
Felec=qE=[kq1q2]/r²
?p=f?t (where f is AVERAGE force and t is how long force is applied)

50. If speed is high - index of refraction is....
Atom + electron--> Neutron (the addition of an electron - °?1e - causes a proton to change into a neutron - i.e. PROTON TRANSFORMS)
G= 6.67 * 10?¹¹ Nm²/kg²
Low
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)