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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. angular frequency of spring ?
?=vk/m=2p??
It jumps to higher energy level
Wave speed
Req=R1+R2+R3 Veq=V1+V2+V3

2. electric field equation
Sin=1 cos=0
F=- F
E=kQ/r^2
3a=Beta

3. larger the index of refraction..
Slower light will travel
F=ma
I=?q/?t
It is halved

4. find factor by which something has been changed
2pvm/k
New/old
?L=aL?T
Q=CV

5. wave velocity=
P=m?v
Light travels from high n to lower n with an angle of incidence greater than the critical angle
3
???

6. determine spring constant
Approx .7
E=Pt
F=xk=mg
W'=?E=?KE+?U

7. centripetal acceleration
A=v^2/r
F1/A1=F2/A2
No net force acting on it
1/2mv^2

8. find voltage (original)
Sin=v2/2 cos=v2/2
K+U=constant
?=2L/n
V=kq/r

9. Formula for centripetal force
When ?=90 b/c sin90=1
373K 100
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
F=mv^2/r

10. thermal expansion of a solid
Yield strength
Emf is negative
?L=aL?T
Farad 1 F= 1 c/v

11. a lightbulb in a circuit is a
Real inverted image
Resistor
?=vk/m=2p??
F=- F

12. pressure
Ampere (1C/s)
?=4L/n
Energy gained by particle with charge of e when moved through one volt
F/A

13. adhesion
None
Angle of incidence=angle of reflection
Force a molecule of liquid feels toward molecules of some other substance
T=rF where F is proportional to mass and r is distance from pivot

14. electric field of parallel plate capacitor
Photon energy must be greater than work function of the material
E=V/d
Makes ?G more negative thus more spontaneous
1/2mv^2

15. current of AC
W=Fdcos?
Solid to gas
Force a molecule of liquid feels toward molecules of some other substance
Irms=Imax/v2

16. type of image ALWAYS created by diverging (convex) mirror
Charge/length
Virtual upright smaller
U=(1/2)kx^2
C=Q/V

17. density of water
Cohesion
1000 kg/m^3 or 1 g/cm^3
Ceq=C1+C2+C3 Veq=V1=V2=V3
?x=1/2(v+vo)t

18. diffraction
Points away from + and toward -
Spreading out of light as it passes through a narrow opening
None
No net force acting on it

19. density with units
Incident light is used to free electrons from a metal
Perpendicular to each other
V=???
?=m/v kg/m^3 g/ml g/cm^3

20. When is voltage constant across capacitors
Emf is positive
When in parallel
Ceq=C1+C2+C3 Veq=V1=V2=V3
F=1/2(r)

21. torque formula
T=rFsin?
When in parallel
???
F=c/?

22. electric work
W'=?E=?KE+?U
U=q?v
C=Q/V
EV

23. relate focal length and radius of curvature(r)
Degree=p/180 radian
?=m/v kg/m^3 g/ml g/cm^3
F=r/2
F=ma

24. under constant acceleration - v=
Vo+at
V=kQ/r
Real image
X=(initial horizontal v)(time in air)

25. capacitors in parallel
F=- F
N=c/v
Ceq=C1+C2+C3 Veq=V1=V2=V3
???

26. 'real' side of a lens
Degree=p/180 radian
C=Q/V
F=nv/2L
Side opposite From which light originates

27. calculate lens power
I=?q/?t
Angle of incidence=angle of reflection
P=1/f
Derive universal gravitation equation

28. When does turbulence in a fluid arise
Slower light will travel
Zero resistance
When velocity of the fluid exceeds critical velocity
Q=mL

29. specific gravity is less than one
Minimum frequency of light that will cause emission of an electron
Substance is less dense then water
(Vo+v)/2
P=m?v

30. type of heat transfer involving the physical motion of heated material
F=mv^2/r
1/f=1/o+ 1/i
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Convection

31. vertical velocity of projectile
Higher temperature increases resistance
Vsin?
Counterclockwise is + clockwise is -
Current*voltage

32. speed of light in a vacuum (c) =
U=QV
E=V/d
???
The shortest wavelength

33. work function
B=
1/f=1/o+ 1/i
Converted to extra kinetic energy of the emitted electron
Energy required to free electron from given metal

34. What is heat of fusion
Charge/area
Solute whose solution is conductive
C=e(A/d)
Amount of energy required for phase change from solid to liquid

35. light bends toward normal when
N2>n1
?x=1/2(v+vo)t
B=
Real inverted

36. period of pendulum
?x=1/2(v+vo)t
Approx .7
Moving charge
2pvL/g

37. 90
F=1/2(r)
Sin=1 cos=0
Frequency
Charge remains constant

38. deposition
U=1/2QV=1/2CV^2=1/2Q^2/C
Gas to solid
image/object
P=IV

39. beat frequencies for two frequencies differing by 4 Hz
Minimum frequency of light that will cause emission of an electron
Beta=10Log(I/Io)
4 Hz
Difference between the mass of nucleus and the sum of nucleons

40. material with moderate resistance
Longitudinal
Resistor
Vo+at
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

41. relate velocities and displacement 2 ways
Fluid resistance to flow
W=mg=?Vg
V^2=vo^2+2a?x ?x=1/2(vo+v)t
E=1/2k(A^2)

42. 30
Sin=1/2 cos=v3/2
Virtual upright
Substance is more dense then water
When in parallel

43. electric flux
Vrms=Vmax/v2
Cohesion
E=1/2k(A^2)
F=E*A

44. boiling point of H2O in K and C
373K 100
When velocity of the fluid exceeds critical velocity
Negative
E=Pt

45. 45
Force applied parallel to objects surface
Sin=v2/2 cos=v2/2
Coulomb=amphere*sec
Negative

46. large moduli value
More rigid material
M1v1=m2v2
Energy gained by particle with charge of e when moved through one volt
W=mg=?Vg

47. under constant acceleration - two ways ?x=
Vot+1/2at^2=(V0+v/2)t
Real inverted
Coulomb=amphere*sec
Conductor

48. point of shape change beyond which a material can go back to normal
V=?A
Beta=10Log(I/Io)
Yield strength
Holds whenever we have a change in energy ?E=?KE+?PE=0

49. ideal ammeter
P=IV
Points away from + and toward -
R=pL/A
Zero resistance

50. sound level
Increases
1000 kg/m^3 or 1 g/cm^3
Beta=10Log(I/Io)
Virtual upright