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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. Magnetic force formula (for wire)?
Negative - focus behind the lens (= virtual image)
Etotal= E rest + KE= mc² + (Y-1)mc²
F=ILBsin? (?= angle btw. L and B)
Y= 1/ v(1-(v/c)²)

2. Total KE formula
Voltage=PE/q (remember Joules/Coulomb= volt)
Etotal= E rest + KE= mc² + (Y-1)mc²
(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)
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)

3. Formula for electric field?
E= kq/r² (= f/q)
Vfinal²=V0²+ 2ad
PE=mgh
Eff= 1- Qc/Qh = 1- Tc/Th

4. (Full) Displacement formula
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
E= kq/r² (= f/q)
1.67*10?²7kg
Eff= 1- Qc/Qh = 1- Tc/Th

5. If speed is slow/low - index of refraction is...
Large/high
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
The volume of the object.
E0= 8.85 * 10?¹² C²/(Nm²)

6. magnitude of charge on electron/proton
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)
1.6*10?¹? C
KE=1/2mv²
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)

7. Apparent weight (weight of submerged object)
Longer ? - larger diffraction - smaller shadow.
Ni sin?i=nrsin?r
Large/high
Apparent weight = Fb- weight= (mfg) - (m0g) = (mass of displaced fluid gravity) - (initial mass of object while hanging in air gravity) = (DfVfg)- (DoVog)

8. Potential Energy formula
PE=mgh
Threshold frequency=F/h (= work functions/planck's constant)
Vfinal²=V0²+ 2ad
P=mv (?p=m?v)

9. Relativistic formula for time
Fb= mass of displaced fluid * gravity
EMFavg. induced= -?Fb/ ?t (= - change in mag flux/change in time)
4.14 10?¹5 eVs
?Tstationary= Y (?Tmoving)

10. Work performed by charge displacement? (hopefully...won't have to know)
F=ILBsin? (?= angle btw. L and B)
W= - kq1q2 (1/r2 - 1/r1)
Etotal= E rest + KE= mc² + (Y-1)mc²
?= 4L + 1.6d

11. Conversion factor from atomic mass units to MeV?
?V2/?V1= N2/N1 (if secondary greater than primary it's a step-up transformer).
Large/high
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
931MeV=1amu

12. Threshold frequency formula?

13. Electron capture
Atom + electron--> Neutron (the addition of an electron - °?1e - causes a proton to change into a neutron - i.e. PROTON TRANSFORMS)
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.

14. deBroglie wavelength explanation
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)
P=mv (?p=m?v)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
?p=f?t (where f is AVERAGE force and t is how long force is applied)

15. Formula for energy levels within any atom?

16. ONE END CAPPED PIPE FREQUENCY (Frequency/Harmonic series of a pipe closed at one ned)
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)
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.

17. Threshold frequency explanation?
A=v²/ r
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
The volume of the object.
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted

18. How to find total magnification?

19. Formula for magnetic flux?
?= 4L + 1.6d
Threshold frequency=F/h (= work functions/planck's constant)
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
Length stationary=Length moving/Y

20. Momentum formula?
Felec=qE=[kq1q2]/r²
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)
P=mv (?p=m?v)
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)

21. Formula for energy of a photon?

22. Capacitance formula? (there are two)
1/f= 1/di + 1/do
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted
C= Q/V = e0 *A/d
Etotal= E rest + KE= mc² + (Y-1)mc²

23. Sign of focus for convex lens?
V=IR
Negative - focus behind the lens (= virtual image)
G= 6.67 * 10?¹¹ Nm²/kg²
Felec=qE=[kq1q2]/r²

24. Kinetic Energy formula
KE=1/2mv²
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
Intensity a Amplitude/ d²
?Tstationary= Y (?Tmoving)

25. Newton's third law
For every action there is an equal and opposite reaction
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)
Negative - focus behind the lens (= virtual image)

26. OPEN PIPE FREQUENCY (Frequency/Harmonic series of a pipe opened at both ends)
F= (9/5)C+ 32
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
K= 9 * 10? Nm²/C²

27. Heat of fusion/vaporization fromula
Vfinal= V0 +at
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)
Longer ? - larger diffraction - smaller shadow.
Q=m*L (where L is the latent heat of fusion or vaporization)

28. Law of reflection
Angle of incidence=Angle of reflection
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)
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)

29. Index of refraction formula
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
Minimum frequency that needs to illuminate a metal surface for photoELECTRONS to be emitted
N= C/velocity.
4.14 10?¹5 eVs

30. Centripetal acceleration formula
PV/nT'= p'V'n'T' (p=pressure - V= VOLUME - T= temperature)
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.
The incident angle at which total internal reflection occurs (use ?r=90°)
A=v²/ r

31. Converting Fahrenheit to Celsius
Product of each lens's magnification
F= (9/5)C+ 32
Felec=qE=[kq1q2]/r²
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)

32. Magnetic force formula (for particle)?
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)
F= (9/5)C+ 32
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
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)

33. Newton's first law (Law of...)
E= kq/r² (= f/q)
F=mv²/ 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)
Law of inertia. Object in motion stays in motion unless acted upon by an outside force.

34. Energy of an emitted photon formula?
1/f= 1/di + 1/do
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
Energy of emitted photon = E2-E1 (=Energy level higher- Energy level lower)
E= V/d

35. New/old gas formula?

36. ß? decay?
Felec=qE=[kq1q2]/r²
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
Q=mc?T (where T is temperature)
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)

37. Electric field between two plates formula?
Ebinding= ?m * c² (= (?m)c²)
4.14 10?¹5 eVs
?IE= - W (work)
E= V/d

38. Planck's constant in J*s?
Angle of incidence=Angle of reflection
Beat frequency= |F1-F2|
Product of each lens's magnification
6.6310 ?³4 Js

39. Activity of a radioactive sample formula? (probably don't have to know)
Neutron --> Proton + electron ( + electron-antineutrino - V with line over it) ( °?1e produced)
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)
F= (9/5)C+ 32
M= -di/do (=-hi/ho)

40. Relativistic formula for (kinetic) energy
E= kq/r² (= f/q)
?= 4L + 1.6d
1.6*10?¹? C
KE= (Y-1)mc² (= (Y-1)E)

41. Impulse formula
Vfinal²=V0²+ 2ad
Intensity a Amplitude/ d²
?p=f?t (where f is AVERAGE force and t is how long force is applied)
4.14 10?¹5 eVs

42. K constant for electric field formula?
F=ILBsin? (?= angle btw. L and B)
K= 9 * 10? Nm²/C²
Positive - focus in front of the lens (=real image)
A=v²/ r

43. Work formula
Y= 1/ v(1-(v/c)²)
E= kq/r² (= f/q)
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)
W=(Force parallel)(distance)= Pressure ? V (change in volume)= qvoltage

44. Right-hand rule
The incident angle at which total internal reflection occurs (use ?r=90°)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.
M= -di/do (=-hi/ho)
KE=1/2mv²

45. ß? decay?
F=ILBsin? (?= angle btw. L and B)
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
W= - kq1q2 (1/r2 - 1/r1)
4.14 10?¹5 eVs

46. Conservation of momentum
C= 3*108 m/s
Momentum is always conserved in the absence of an outside force
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)
W= - kq1q2 (1/r2 - 1/r1)

47. mass of a proton/neutron (there's a slight difference but ignore it - neutron has slightly more mass)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
1.67*10?²7kg
Ebinding= ?m * c² (= (?m)c²)
V=f?

48. Power formula?
Felec=qE=[kq1q2]/r²
P=IV=I²R=V² /R = Fd/t= Force*velocity
KE= (Y-1)mc² (= (Y-1)E)
Negative - focus behind the lens (= virtual image)

49. Correction factor for wavelength in a diffraction experiment (probably don't have to know)
Force magnetic= |q|vBsin? (=qVperpendicularB) (?= angle between v and B)
Ebinding= ?m * c² (= (?m)c²)
C= Q/V = e0 *A/d
?= 4L + 1.6d

50. Thin lens equation
1/f= 1/di + 1/do
P=IV=I²R=V² /R = Fd/t= Force*velocity
The incident angle at which total internal reflection occurs (use ?r=90°)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.