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MCAT Physics Formulas

Subjects : mcat, science

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. When does turbulence in a fluid arise
K+U=constant
When velocity of the fluid exceeds critical velocity
Sin=v3/2 cos=1/2
Mass

2. sound level
Vrms=Vmax/v2
More flow less resistance
2
Beta=10Log(I/Io)

3. resistance in parallel
C=e(A/d)
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
(Vo+v)/2
Constant for closed system independent of changes in area

4. magnetic field force on current carrying wire
F=I(L*B)
F=E*A
Upright image
Zero resistance

5. diffraction
Sin=v3/2 cos=1/2
Beta=
Frequency
Spreading out of light as it passes through a narrow opening

6. electromotive force
Vbulk modulus
Pressure to move - voltage when no charge is moving between 2 terminals
Solute whose solution is conductive
Increase length increase resistance

7. parabolic mirror: object between c and f - image is...
Angle of incidence=angle of reflection
2pr
Bigger and beyond original object
F1/A1=F2/A2

8. power of sound wave
F=- F
P=IA
Diopters
Minimum frequency of light that will cause emission of an electron

9. magnetic field is created by loop wire - What is magnetic field at center of loop
F=1/2(r)
MRT
1000 kg/m^3 or 1 g/cm^3
Beta=

10. 180
The shortest wavelength
C=Q/V
Sin=0 cos=-1
Protons+neutrons

11. find voltage (original)
V=kq/r
Beta=10Log(I/Io)
T=rFsin?
(Vo+v)/2

12. relate charge and current
Emf is negative
T=rFsin?
4 Hz
Coulomb=amphere*sec

13. photoelectric effect
?=2L/n
T=rFsin?
Incident light is used to free electrons from a metal
Pascal (Pa) N/m^2

14. determine spring constant
??=nv/4L
Makes ?G more negative thus more spontaneous
F=xk=mg
As speed of fluid increases pressure and potential energy decrease

15. to find acceleration due to gravity
Derive universal gravitation equation
Hydrostatics
Force applied parallel to objects surface
Low voltage to high voltage

16. 45
Resistor
T=rFsin?
Sin=v2/2 cos=v2/2
Sin=v3/2 cos=1/2

17. mirror image is on same side as object
F=nv/2L
Spreading out of light as it passes through a narrow opening
Image is always upright virtual and smaller
Real image

18. parabolic mirror: object in front of focal point
image/object
P=i^2R=V^2/R=IV
Virtual upright
Virtual

19. force experienced by moving charge traveling parallel or antiparallel to magnetic field
Sin=v2/2 cos=v2/2
None
Incident light is used to free electrons from a metal
2pvm/k

20. voltage of AC
F=- kx
Sin=1/2 cos=v3/2
Gas to solid
Vrms=Vmax/v2

21. sublimation
C=Q/V
Solid to gas
Electric fields of all the light waves are oriented in the same direction
More malleable material

22. vertical velocity of projectile
Vsin?
J=Force*Time=mv - mvo=?p
(mass defect)(speed of light)^2
F=1/2(r)

23. fungal cells unlike animals cells do not contain
Approx .7
Current*voltage
Real inverted image
Centrioles

24. center of curvature is...
2 times the focal distance
1/f=1/o+ 1/i
Coulomb=amphere*sec
Ceq=C1+C2+C3 Veq=V1=V2=V3

25. closed pipe wavelength
F/A
Current*voltage
?=4L/n
Internal resistance is zero voltage=emf

26. What is heat of fusion
Amount of energy required for phase change from solid to liquid
F=Gm1m2/r^2
3a=Beta
Minimum frequency of light that will cause emission of an electron

27. snells law
F=1/2(r)
Nsin?incident=nsin?refraction
Sin=0 cos=1
Vo^2+2a(?x)

28. under what conditions will light undergo total internal reflection
Negative
Light travels from high n to lower n with an angle of incidence greater than the critical angle
None
N*s/m^2

29. plane mirrors create What type of image
It jumps to higher energy level
A Calorie is a nutritional term equal to 1000 calories
Virtual
Radiation

30. under constant acceleration - v=
Gamma decay
F=r/2
Emf is negative
Vo+at

31. torque formula
When in parallel
Bigger and beyond original object
Light emitted due to heat
T=rFsin?

32. Log(1000)=
N1>n2
Counterclockwise is + clockwise is -
R=pL/A
3

33. What is displacement equation
Insulator
?=vk/m=2p??
Inverted image
?x=1/2(v+vo)t

34. What does atoms atomic weight represent
Weighted average of the masses of the element
(1/2)?v^2
Vbulk modulus
Neutron is converted into a proton and an electron is emitted

35. amplitude of spring is proportional to...
Force and acceleration
When in parallel
?=4L/n
Makes ?G more negative thus more spontaneous

36. units for viscosity
N2>n1
Hydrostatics
Charge remains constant
N*s/m^2

37. conservation of energy law
Amount of energy required for phase change from solid to liquid
Convection
E=Pt
Holds whenever we have a change in energy ?E=?KE+?PE=0

38. atoms atomic number represents
Nsin?incident=nsin?refraction
Energy gained by particle with charge of e when moved through one volt
Incident light is used to free electrons from a metal
Number of protons in nucleus

39. cohesion
Force a molecule of liquid feels toward the other molecules of the liquid
Approx .7
Fusion
Constant for closed system independent of changes in area

40. fission
Frequency
Fk=
Splitting of atomic nuclei
Gas to solid

41. relationship between linear thermal expansion and volumetric thermal expansion
U=QV
3a=Beta
Buoyant force equals blocks weight
Number of protons in nucleus

42. excess energy of a photon is...
Converted to extra kinetic energy of the emitted electron
Beta=
W=mg=?Vg
Negative

43. speed of light in a vacuum (c) =
Kg*m/s^2
???
Vsin?
F=mv^2/r

44. magnetic field of solenoid
Energy required to free electron from given metal
B=
F=q/e0
Farad 1 F= 1 c/v

45. units for capacitance
Farad 1 F= 1 c/v
Frequency
WATTS
U=q?v

46. focal length
U=1/2QV=1/2CV^2=1/2Q^2/C
1/f=1/o+ 1/i
Gamma decay
Bigger and beyond original object

47. under constant acceleration - two ways ?x=
E*r
Vot+1/2at^2=(V0+v/2)t
Charge/area
F=nv/2L

48. ideal ammeter
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
2pvm/k
2pr
Zero resistance

49. equation relating heat gained and temperature change
Q=mc?t
B=(F/A)/(?V/V)
373K 100
Conductor

50. When is torque maximum
E=V/d
When ?=90 b/c sin90=1
P=IA
Real inverted image