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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. magnetic force
Decrease in pressure that fluid exerts on the walls of the container
Q=mc?t
F=qvBetasin?
Virtual upright

2. (-) magnification signifies
V=ED
N is proportional to 1/?
Number of protons in nucleus
Inverted image

3. When is voltage constant across capacitors
Energy required to free electron from given metal
When in parallel
Force a molecule of liquid feels toward molecules of some other substance
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

4. equation for static friction
Fs=
The liquid itself not the object
?=4L/n
I=?q/?t

5. electrolyte
Solute whose solution is conductive
Constant for closed system independent of changes in area
F1/A1=F2/A2
(Vo+v)/2

6. What is displacement equation
V=???
Slower light will travel
??=nv/4L
?x=1/2(v+vo)t

7. process of combing smaller nuclei to create larger nuclei
image/object
Fusion
New/old
It jumps to higher energy level

8. osmotic pressure formula
V=kq/r
MRT
Vsin?
Incident light is used to free electrons from a metal

9. circumference of a circle
E*r
F=r/2
Real inverted
2pr

10. atomic mass number represents
Moving charge
Emf is positive
Protons+neutrons
?x=1/2(v+vo)t

11. freezing point of H2O in K and C
F=r/2
273K 0
Inverted image
U=QV

12. under constant acceleration V(average)=
E*r
When ?=90 b/c sin90=1
2pr
(Vo+v)/2

13. nucleon
F=nv/2L
A Calorie is a nutritional term equal to 1000 calories
Proton or neutron
Beta=

14. electromotive force
V=?A
Pressure to move - voltage when no charge is moving between 2 terminals
Centrioles
4 Hz

15. When does turbulence in a fluid arise
Hydrostatics
When velocity of the fluid exceeds critical velocity
F=c/?
F=xk=mg

16. large moduli value
E=???=hc/?
More rigid material
W=qv
100% of the object will be submerged but will not sink

17. v2/2
Emf is negative
B=
Approx .7
V=ED

18. 0
Vbulk modulus
More malleable material
Moving charge
Sin=0 cos=1

19. youngs modulus
Angle of incidence=angle of reflection
E=Pt
Y=(F/A)/(?L/L) stress over strain
A Calorie is a nutritional term equal to 1000 calories

20. what creates a magnetic field
Moving charge
T=1/f
Upright image
MRT

21. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
?x=1/2(v+vo)t
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
Fnet=0 thus Fg=Fs mg=kx
Conduction

22. Gauss's Law
F=q/e0
Electric fields of all the light waves are oriented in the same direction
Conduction
N1>n2

23. meaning of Bernouili's equation
Yield strength
Pressure to move - voltage when no charge is moving between 2 terminals
Emf is negative
As speed of fluid increases pressure and potential energy decrease

24. boiling point of H2O in K and C
2pr
Energy required to free electron from given metal
373K 100
3a=Beta

25. calculate lens power
Will never decrease capacitance
P=1/f
Vrms=Vmax/v2
Negative

26. excess energy of a photon is...
U=QV
Converted to extra kinetic energy of the emitted electron
Difference between the absolute and atm pressure Pg=P- Patm
Cohesion

27. units for power of a lens
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Diopters
Vo+at
Fluid resistance to flow

28. dynamic pressure
?=2L/n
Resistor
(1/2)?v^2
Energy gained by particle with charge of e when moved through one volt

29. find power in circuit
Force applied parallel to objects surface
Current*voltage
F=- F
Dispersion

30. under constant acceleration - v=
Vo+at
P=1/f
Inverted image
Longitudinal

31. all harmonics have the same
Wave speed
Spreading out of light as it passes through a narrow opening
2pvm/k
It is halved

32. What does atoms atomic weight represent
Weighted average of the masses of the element
Difference between the mass of nucleus and the sum of nucleons
Points away from + and toward -
?L=aL?T

33. power (in general)
P=i^2r
Bigger and beyond original object
Makes ?G more negative thus more spontaneous
Work/time

34. object placed inside focal point in converging lens create What type of image
Virtual upright
V=???
3
Solid to gas

35. Log(100)=
Light emitted due to heat
Gas to solid
C=Q/V
2

36. 'real' side of a lens
Side opposite From which light originates
N1>n2
MRT
Real inverted

37. Newtons 3rd law of motion
F=- F
E=1/2k(A^2)
Rate of doing work
B=(F/A)/(?V/V)

38. sound level
Diopters
(Vo+v)/2
Photon energy must be greater than work function of the material
Beta=10Log(I/Io)

39. light bends toward normal when
Fs=
Mass number
N2>n1
Energy required to free electron from given metal

40. speed of sound in proportional to...
2pvm/k
W=mg=?Vg
Vbulk modulus
Nsin?incident=nsin?refraction

41. kirchhoff's rule -- travel from negative to positive
Emf is positive
Electric fields of all the light waves are oriented in the same direction
Beta=10Log(I/Io)
Perpendicular to each other

42. electric flux
Current*voltage
Buoyant force equals blocks weight
F=E*A
Approx .7

43. bulk modulus
U=QV
Beta=10Log(I/Io)
F=q/e0
B=(F/A)/(?V/V)

44. location of minima in diffraction pattern
Hydrostatics
A sin?=n?
Force and acceleration
E=Pt

45. study of fluids at rest
Cohesion
C=e(A/d)
Q=mc?t
Hydrostatics

46. parabolic mirror: image at focal point
Surface
Force and acceleration
Q=mc?t
No image is formed

47. equation for kinetic friction
Difference between the mass of nucleus and the sum of nucleons
Inverted image
F1/A1=F2/A2
Fk=

48. horizontal velocity of projectile
?V=BetaV?T
F=r/2
Beta=
Vcos?

49. increasing emf has What effect on ?G
Makes ?G more negative thus more spontaneous
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Frequency
?L=aL?T

50. 60
C=Q/V
Sin=v3/2 cos=1/2
Vo^2+2a(?x)
F=Gm1m2/r^2