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MCAT Physics Formulas

Subjects : mcat, science

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Log(1000)=
3
F=Gm1m2/r^2
C=Q/V
Nsin?incident=nsin?refraction

2. centripetal acceleration
Amount of energy required for phase change from solid to liquid
F=xk=mg
A=v^2/r
Protons+neutrons

3. specific gravity is less than one
Substance is more dense then water
Substance is less dense then water
Amount of energy required for phase change from solid to liquid
U=q?v

4. find factor by which something has been changed
F1/A1=F2/A2
Will never decrease capacitance
New/old
N2>n1

5. What does atoms atomic weight represent
Weighted average of the masses of the element
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Charge/length
Emf is positive

6. When does turbulence in a fluid arise
When velocity of the fluid exceeds critical velocity
?x=1/2(v+vo)t
N2>n1
373K 100

7. ? of sound wave=
Solid to gas
Energy of electrons
V/??
Higher temperature increases resistance

8. force experience by stationary particle in magnetic field
F1/A1=F2/A2
None
2
Vrms=Vmax/v2

9. body in translational equilibrium
None
Weighted average of the masses of the element
No net force acting on it
E=V/d

10. fungal cells unlike animals cells do not contain
Real inverted
Centrioles
Fk=
Hydrostatics

11. threshold frequency (photoelectric effect)
Q=CV
Minimum frequency of light that will cause emission of an electron
Sin=1 cos=0
B=(F/A)/(?V/V)

12. relate charge and current
Solid to gas
F/A
700nm -400nm
Coulomb=amphere*sec

13. z in isotopic notation
W=Fdcos?
Number of protons
Photon energy must be greater than work function of the material
V/??

14. sound waves are what kind of waves
R=pL/A
Vo^2+2a(?x)
F=nv/2L
Longitudinal

15. energy stored in capacitor
Minimum frequency of light that will cause emission of an electron
Vrms=Vmax/v2
1000 kg/m^3 or 1 g/cm^3
U=1/2QV=1/2CV^2=1/2Q^2/C

16. magnitude of magnetic field for current carrying wire
F=- F
Beta=
Current*voltage
?=2L/n

17. When is voltage constant across capacitors
Spring constant
E=???=hc/?
C=Q/V
When in parallel

18. Hooke's Law
T=rF where F is proportional to mass and r is distance from pivot
Convection
F=- kx
Vo^2+2a(?x)

19. ideal ammeter
Zero resistance
Rate of doing work
Increases
Sin=1 cos=0

20. type of image ALWAYS created by diverging (convex) mirror
Derive universal gravitation equation
Virtual upright smaller
F1/A1=F2/A2
(mass defect)(speed of light)^2

21. suppose a block is floating in H2O - What does this mean
Current*voltage
Buoyant force equals blocks weight
Substance is less dense then water
?x=1/2(v+vo)t

22. to find acceleration due to gravity
Derive universal gravitation equation
Number of protons
Higher temperature increases resistance
???

23. meaning of Bernouili's equation
Sin=0 cos=-1
Buoyant force equals blocks weight
Decrease in pressure that fluid exerts on the walls of the container
As speed of fluid increases pressure and potential energy decrease

24. work as product of pressure and volume change
F1/A1=F2/A2
Degree=p/180 radian
Number of protons
Farad 1 F= 1 c/v

25. freezing point of H2O in K and C
B=
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
273K 0
3a=Beta

26. snell's law derivative
3a=Beta
Image is always upright virtual and smaller
N is proportional to 1/?
P=m?v

27. audible wave frequency
Nsin?incident=nsin?refraction
Equilibrium position
Virtual upright
20 Hz to 20 -000 Hz

28. under constant acceleration - v=
Conduction
Vo+at
Virtual upright smaller
Counterclockwise is + clockwise is -

29. mass defect
Difference between the mass of nucleus and the sum of nucleons
U=(1/2)kx^2
Spring constant
The liquid itself not the object

30. in calculating torque - which direction is + and which is
Counterclockwise is + clockwise is -
F=1/2(r)
A Calorie is a nutritional term equal to 1000 calories
Higher temperature increases resistance

31. what creates a magnetic field
I=P/A
(Vo+v)/2
Equilibrium position
Moving charge

32. sound level
Current*voltage
?=vk/m=2p??
N2>n1
Beta=10Log(I/Io)

33. when spring is at rest
Fnet=0 thus Fg=Fs mg=kx
Pascal (Pa) N/m^2
Beta=10Log(I/Io)
Weighted average of the masses of the element

34. magnetic force
Sin=v2/2 cos=v2/2
Minimum frequency of light that will cause emission of an electron
F=qvBetasin?
F1/A1=F2/A2

35. light ray that strikes a surface
Current*voltage
Incident ray
More rigid material
Vcos?

36. formula for impulse (J)
B=(F/A)/(?V/V)
J=Force*Time=mv - mvo=?p
Resistor
F=I(L*B)

37. relationship between linear thermal expansion and volumetric thermal expansion
M1v1=m2v2
Slower light will travel
Is equal to gravitational force
3a=Beta

38. adhesion
Substance is more dense then water
Force a molecule of liquid feels toward molecules of some other substance
Cohesion
E=???=hc/?

39. surface tension results from
Cohesion
2pr
Protons+neutrons
V=IR

40. capacitance equation in circuit
C=Q/V
A sin?=n?
image/object
273K 0

41. charge of beta particles
Protons+neutrons
Negative
E*r
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

42. density of water
1000 kg/m^3 or 1 g/cm^3
W=qv
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Virtual upright

43. study of fluids at rest
2 times the focal distance
Hydrostatics
When in parallel
Radiation

44. Find electric potential given electric field
Work/time
E*r
2pr
Sin=v2/2 cos=v2/2

45. intensity of sound
I=P/A
Energy required to free electron from given metal
E=???=hc/?
Fluid resistance to flow

46. work function
Makes ?G more negative thus more spontaneous
1/2mv^2
Energy required to free electron from given metal
Kg*m/s^2

47. excess energy of a photon is...
T=1/f
U=q?v
Force a molecule of liquid feels toward the other molecules of the liquid
Converted to extra kinetic energy of the emitted electron

48. electrical power
E*r
P=IV
X=(initial horizontal v)(time in air)
Pressure to move - voltage when no charge is moving between 2 terminals

49. magnetic field force on current carrying wire
When in parallel
F=I(L*B)
Kg*m/s^2
100% of the object will be submerged but will not sink

50. reflection law
Force a molecule of liquid feels toward the other molecules of the liquid
Angle of incidence=angle of reflection
Spreading out of light as it passes through a narrow opening
Constant for closed system independent of changes in area

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MCAT Physics Formulas

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