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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. equation relating heat gained and temperature change
Charge/length
Q=mc?t
Energy gained by particle with charge of e when moved through one volt
It jumps to higher energy level

2. direction of electric field created by charge
It jumps to higher energy level
Resistor
Points away from + and toward -
E=kQ/r^2

3. resistance equation
R=pL/A
Low voltage to high voltage
?V=BetaV?T
Energy of electrons

4. material with moderate resistance
Inverted image
Insulator
N1>n2
Resistor

5. image created when converging (concave) mirror when object is placed beyond focal point
Diopters
Photon energy must be greater than work function of the material
Y=(F/A)/(?L/L) stress over strain
Real inverted image

6. freezing point of H2O in K and C
273K 0
Fnet=0 thus Fg=Fs mg=kx
B=(F/A)/(?V/V)
Neutron is converted into a proton and an electron is emitted

7. magnetic field force on current carrying wire
F=I(L*B)
Angle of incidence=angle of reflection
373K 100
Vo^2+2a(?x)

8. units for newtons
2pvm/k
F=q/e0
Kg*m/s^2
F=ma

9. specific gravity greater than one
Points away from + and toward -
Conduction
New/old
Substance is more dense then water

10. larger the index of refraction..
Sin=v3/2 cos=1/2
K+U=constant
P=IA
Slower light will travel

11. Ohm's Law
F=r/2
V=IR
Intensity
Beta=

12. length of resistor
Increase length increase resistance
Wave speed
Q=mL
When velocity of the fluid exceeds critical velocity

13. find voltage (original)
Points away from + and toward -
?L=aL?T
Degree=p/180 radian
V=kq/r

14. light bends toward normal when
Protons+neutrons
F=q/e0
U=(1/2)kx^2
N2>n1

15. total horizontal distance traveled by projectile
N2>n1
Emf is positive
F=qvBetasin?
X=(initial horizontal v)(time in air)

16. continuity equation*
Increase length increase resistance
?=2L/n
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
image/object

17. under what conditions will light undergo total internal reflection
More rigid material
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Ampere (1C/s)
Vot+1/2at^2=(V0+v/2)t

18. a virtual image has what kind of image distance
Negative
WATTS
E=neE n is excess charge
Counterclockwise is + clockwise is -

19. energy of a photon is dependent on...
F=ma
Frequency
Vsin?
Negative

20. to find acceleration due to gravity
Counterclockwise is + clockwise is -
Derive universal gravitation equation
Beta=10Log(I/Io)
Energy required to free electron from given metal

21. torque is given by
None
W=mg=?Vg
T=rF where F is proportional to mass and r is distance from pivot
N1>n2

22. cohesion
Mass number
V=kq/r
Virtual upright smaller
Force a molecule of liquid feels toward the other molecules of the liquid

23. kirchhoff's rule -- travel from positive to negative
None
Spring constant
Cohesion
Emf is negative

24. electric flux
Vo^2+2a(?x)
Negative
F=E*A
Force and acceleration

25. material with low resistance
Yield strength
Conductor
Conduction
Virtual upright

26. -Beta- decay
Yield strength
Pascal (Pa) N/m^2
image/object
Neutron is converted into a proton and an electron is emitted

27. v2/2
Decrease in pressure that fluid exerts on the walls of the container
Ampere (1C/s)
Approx .7
4 Hz

28. in calculating torque - which direction is + and which is
Counterclockwise is + clockwise is -
C=eoKA/D
V=kq/r
Q=mc?t

29. 0
Approx .7
Sin=0 cos=1
Charge/area
Virtual

30. Electric Potential equation
V=kQ/r
N=c/v
Solid to gas
Beta=

31. pressure
??=nv/4L
Upright image
F/A
Side opposite From which light originates

32. diffraction
Spreading out of light as it passes through a narrow opening
Constant for closed system independent of changes in area
3a=Beta
Bigger and beyond original object

33. magnetic force
Vbulk modulus
F=q/e0
F=qvBetasin?
Emf is negative

34. charge of gamma particles
When ?=90 b/c sin90=1
None
Frequency
Light emitted due to heat

35. osmotic pressure formula
Coulomb=amphere*sec
Beta=
MRT
U=1/2QV=1/2CV^2=1/2Q^2/C

36. amplitude of spring is proportional to...
Spring constant
F=xk=mg
Force and acceleration
Kg*m/s^2

37. formula for solution which is diluted related to initial concentration
Decrease in pressure that fluid exerts on the walls of the container
Fk=
M1v1=m2v2
2pvm/k

38. formula for impulse (J)
Negative
F1/A1=F2/A2
J=Force*Time=mv - mvo=?p
More rigid material

39. relate velocities and displacement 2 ways
Gas to solid
Light travels from high n to lower n with an angle of incidence greater than the critical angle
B=
V^2=vo^2+2a?x ?x=1/2(vo+v)t

40. horizontal velocity of projectile
Vcos?
Req=R1+R2+R3 Veq=V1+V2+V3
Electric fields of all the light waves are oriented in the same direction
Centrioles

41. boiling point of H2O in K and C
373K 100
F=nv/2L
Force a molecule of liquid feels toward molecules of some other substance
Solute whose solution is conductive

42. process of combing smaller nuclei to create larger nuclei
Beta=
Mass
Fusion
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

43. (-) magnification signifies
V=kQ/r
P=1/f
Inverted image
W'=?E=?KE+?U

44. increasing emf has What effect on ?G
2pvL/g
Makes ?G more negative thus more spontaneous
Charge/area
P=i^2R=V^2/R=IV

45. What is heat of fusion
Amount of energy required for phase change from solid to liquid
Neutron is converted into a proton and an electron is emitted
E=Pt
Substance is more dense then water

46. 90
Sin=1 cos=0
Solid to gas
Cohesion
Gas to solid

47. work function
Energy required to free electron from given metal
EV
Fnet=0 thus Fg=Fs mg=kx
Derive universal gravitation equation

48. work in electromagnetic field
F=I(L*B)
W=qv
F=nv/2L
2pr

49. specific gravity is less than one
Substance is less dense then water
Fusion
Converted to extra kinetic energy of the emitted electron
Cohesion

50. a lightbulb in a circuit is a
When ?=90 b/c sin90=1
Force and acceleration
Resistor
Fusion

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MCAT Physics Formulas

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