Test your basic knowledge |

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. Planck's constant in electronvolts* seconds?
P=mv (?p=m?v)
4.14 10?¹5 eVs
Atom + electron--> Neutron (the addition of an electron - °?1e - causes a proton to change into a neutron - i.e. PROTON TRANSFORMS)
Momentum is always conserved in the absence of an outside force

2. K constant for electric field formula?
K= 9 * 10? Nm²/C²
E= V/d
The volume of the object.
W=(Force parallel)(distance)= Pressure ? V (change in volume)= qvoltage

3. Sign of focus for convex lens?
Negative - focus behind the lens (= virtual image)
Fnet=ma
?=h/p (where p= MOMENTUM=m?v - and h is planck's constant)
1/f= 1/di + 1/do

4. Sign of focus for concave lens?
Positive - focus in front of the lens (=real image)
Negative - focus behind the lens (= virtual image)
The incident angle at which total internal reflection occurs (use ?r=90°)
G= 6.67 * 10?¹¹ Nm²/kg²

5. Potential Energy formula
Distance= velocity * time
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)
Low
PE=mgh

6. Newton's second law
Fnet=ma
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
931MeV=1amu
Q=m*L (where L is the latent heat of fusion or vaporization)

7. Gravitational constant
P=mv (?p=m?v)
KEmax= hf-F (= E-F= Energy of a photon - work function)
G= 6.67 * 10?¹¹ Nm²/kg²
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)

8. Work (only in terms of charge and voltage) formula

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

9. How to find total magnification?

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

10. If you drop an object into water the volume displaced equals...
Distance= velocity * time
The volume of the object.
E=hf (= Planck's constant*frequency)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.

11. Electric field between two plates formula?
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
Distance= velocity * time
R= ?L/A = (resistivity)(length of wire) / (cross sectional Area)
E= V/d

12. Newton's first law (Law of...)
Fb= mass of displaced fluid * gravity
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
Fnet=ma
Law of inertia. Object in motion stays in motion unless acted upon by an outside force.

13. Efficiency of an engine formula
G= 6.67 * 10?¹¹ Nm²/kg²
F=ILBsin? (?= angle btw. L and B)
Eff= 1- Qc/Qh = 1- Tc/Th
Ebinding= ?m * c² (= (?m)c²)

14. Work function F is..?
P=IV=I²R=V² /R = Fd/t= Force*velocity
F=ILBsin? (?= angle btw. L and B)
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.
F=GM1M2/r²

15. Velocity formula if time not given
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.
Apparent weight = Fb- weight= (mfg) - (m0g) = (mass of displaced fluid gravity) - (initial mass of object while hanging in air gravity) = (DfVfg)- (DoVog)
The volume of the object.
Vfinal²=V0²+ 2ad

16. Heat of fusion/vaporization fromula
KEmax= hf-F (= E-F= Energy of a photon - work function)
En= [Z²/n² * -13.6ev ] (Z is number of protons in atom's nucleus - n is energy level number)
Q=m*L (where L is the latent heat of fusion or vaporization)
E=hf (= Planck's constant*frequency)

17. Light intensity is proportional to..
E0= 8.85 * 10?¹² C²/(Nm²)
1.6*10?¹? C
Intensity a Amplitude/ d²
For every action there is an equal and opposite reaction

18. Formula for electric field?
Atom + electron--> Neutron (the addition of an electron - °?1e - causes a proton to change into a neutron - i.e. PROTON TRANSFORMS)
E= kq/r² (= f/q)
R= ?L/A = (resistivity)(length of wire) / (cross sectional Area)
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration

19. Activity of a radioactive sample formula? (probably don't have to know)
A=v²/ r
KEmax= hf-F (= E-F= Energy of a photon - work function)
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)
Momentum is always conserved in the absence of an outside force

20. What is the photoelectric effect?
K= 9 * 10? Nm²/C²
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
Angle of incidence=Angle of reflection
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)

21. (Full/Final) Velocity formula
Vfinal= V0 +at
Distance= velocity * time
Fnet=ma
E0= 8.85 * 10?¹² C²/(Nm²)

22. Critical angle is...
KE=1/2mv²
The incident angle at which total internal reflection occurs (use ?r=90°)
N= C/velocity.
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)

23. Lenz's law
The release of electrons due to bombardment of an atom by photons (groups of quanta/bundles of matter)
1.6*10?¹? C
Induced current will flow opposite direction of magnetic flux.
?IE= - W (work)

24. Capacitance constant
F=GM1M2/r²
Shorter ? - less diffraction - bigger shadow.
E0= 8.85 * 10?¹² C²/(Nm²)
Product of each lens's magnification

25. If speed is high - index of refraction is....
E0= 8.85 * 10?¹² C²/(Nm²)
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
E= kq/r² (= f/q)
Low

26. Capacitance formula? (there are two)
?Tstationary= Y (?Tmoving)
Eff= 1- Qc/Qh = 1- Tc/Th
C= Q/V = e0 *A/d
W=(Force parallel)(distance)= Pressure ? V (change in volume)= qvoltage

27. Binding energy explanation
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)
Law of inertia. Object in motion stays in motion unless acted upon by an outside force.
Shorter ? - less diffraction - bigger shadow.
Vfinal= V0 +at

28. ß? decay?
?= 4L + 1.6d
Positive - focus in front of the lens (=real image)
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)

29. Power formula?
C= Q/V = e0 *A/d
P=IV=I²R=V² /R = Fd/t= Force*velocity
Torque=force perpendicular to radius r = fr Toruqe=Ia = inertia * angular acceleration
?p=f?t (where f is AVERAGE force and t is how long force is applied)

30. Formula for electric potential energy?
W=qVoltage. (think C* J/C and C's cancel out)
PE= 1/2 C (?V)² = 1/2 Q²/C = 1/2 Q?V
Ebinding= ?m * c² (= (?m)c²)
A= A0 e ^ [-?t] (= activity at time t=0 e ^ ( - decay constant * time)

31. deBrolglie wavelength formula

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

32. Relativistic factor Y formula
Y= 1/ v(1-(v/c)²)
Positive - focus in front of the lens (=real image)
Minimal energy that needs to be imparted to an electron on metal surface in order to liberate it.
Angle of incidence=Angle of reflection

33. ONE END CAPPED PIPE FREQUENCY (Frequency/Harmonic series of a pipe closed at one ned)
F= n * vel./ 4L n= 1 - 3 - 5.... (L= length of pipe) (?=4L/n)
4.14 10?¹5 eVs
V= 331 m/s + (.6 m/s°C)Temperature
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)

34. magnitude of charge on electron/proton
4.14 10?¹5 eVs
Proton--> Neutron + positron (+ electron-neutrino - v) (° +1 e is produced)
EMFavg. induced= -?Fb/ ?t (= - change in mag flux/change in time)
1.6*10?¹? C

35. Formula for how velocity changes in air? (probably don't have to know)
KE=1/2mv²
V= 331 m/s + (.6 m/s°C)Temperature
Vfinal²=V0²+ 2ad
F=mv²/ r

36. Magnification equation
M= -di/do (=-hi/ho)
PV=nRT (p= pressure - V= volume - n= number of moles - T= temperature in KELVIN - R= .0821)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.
Large/high

37. Centripetal acceleration formula
Etotal= E rest + KE= mc² + (Y-1)mc²
A=v²/ r
Negative - focus behind the lens (= virtual image)
M= -di/do (=-hi/ho)

38. energy in a reaction q formula?
Q= [(mass of A + mass of B) - (mass of C + mass of D)] c² (where A+B-->C+D)
?= 4L + 1.6d
M= -di/do (=-hi/ho)
Threshold frequency=F/h (= work functions/planck's constant)

39. OPEN PIPE FREQUENCY (Frequency/Harmonic series of a pipe opened at both ends)
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)
Vfinal²=V0²+ 2ad
V=f?
F= n * vel/2L n= 1 - 2 - 3... (L= length of pipe) (?=2L/n)

40. Formula for energy levels within any atom?

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

41. Right-hand rule
S= 1/2at² + v0t+ d0 (intial distance is often ignored because we decide where we want to start)
?=h/p (where p= MOMENTUM=m?v - and h is planck's constant)
E=hf (= Planck's constant*frequency)
Fingers= Magnetic Field - Thumb=Velocity - Palm of hand= Force. RH=Proton - LH= electron.

42. Conversion factor from atomic mass units to MeV?
?Tstationary= Y (?Tmoving)
Etotal= E rest + KE= mc² + (Y-1)mc²
931MeV=1amu
Shorter ? - less diffraction - bigger shadow.

43. Formula for velocity of waves?
I=mr²
V=f?
Zero.
KE=1/2mv²

44. Buoyant force formula
Particles in motion can display wave characteristics - and behave as if they had wavelength (?= h/p)
KEmax= hf-F (= E-F= Energy of a photon - work function)
Fb= mass of displaced fluid * gravity
Ni sin?i=nrsin?r

45. Kinetic Energy formula
?Tstationary= Y (?Tmoving)
KE=1/2mv²
A=v²/ r
E= V/d

46. Relativistic formula for velocity
Shorter ? - less diffraction - bigger shadow.
R= ?L/A = (resistivity)(length of wire) / (cross sectional Area)
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)
Etotal= E rest + KE= mc² + (Y-1)mc²

47. Momentum formula?
P=mv (?p=m?v)
Energy it takes to break a nucleus into separate protons and neutrons (same as energy lost to create atom.)
V=IR
Fb= mass of displaced fluid * gravity

48. Formula for diffraction pattern - Anti-node to Anti-node (A-A)
Low
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)
KE=1/2mv²
Length stationary=Length moving/Y

49. What is the apparent weight of a floating object?
Zero.
Felec=qE=[kq1q2]/r²
Fb= Bperp-to-areaAcos? (Measures density of magnetic field lines that cross through an area)
Etotal= E rest + KE= mc² + (Y-1)mc²

50. Internal energy....equals?
K= 9 * 10? Nm²/C²
?IE= - W (work)
Q=m*L (where L is the latent heat of fusion or vaporization)
C= Q/V = e0 *A/d