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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. cohesion
Force a molecule of liquid feels toward the other molecules of the liquid
A Calorie is a nutritional term equal to 1000 calories
P=i^2R=V^2/R=IV
F=Gm1m2/r^2

2. continuity equation*
Counterclockwise is + clockwise is -
1000 kg/m^3 or 1 g/cm^3
V=ED
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

3. torque formula
Spring constant
P=IA
?=2L/n
T=rFsin?

4. planet orbiting a star - centripetal force
N2>n1
F=q/e0
Is equal to gravitational force
No net force acting on it

5. s
Force and acceleration
2pr
Low voltage to high voltage
Charge/area

6. threshold frequency (photoelectric effect)
F=E*A
Minimum frequency of light that will cause emission of an electron
Diopters
More malleable material

7. splitting of white light in a prim is an example of...
Nsin?incident=nsin?refraction
F=qvBetasin?
Dispersion
Bigger and beyond original object

8. z in isotopic notation
Number of protons
V=kq/r
Side opposite From which light originates
Spreading out of light as it passes through a narrow opening

9. focal for spherical mirrors
F=1/2(r)
700nm -400nm
Gas to solid
F=I(L*B)

10. equation relating heat gained and temperature change
A=v^2/r
Inverted image
Q=mc?t
Virtual

11. As current flows through a resistor
Charge remains constant
Decrease in pressure that fluid exerts on the walls of the container
F=mv^2/r
Frequency

12. meaning of Bernouili's equation
?L=aL?T
Photon energy must be greater than work function of the material
As speed of fluid increases pressure and potential energy decrease
Diopters

13. vertical velocity of projectile
X=(initial horizontal v)(time in air)
None
Vot+1/2at^2=(V0+v/2)t
Vsin?

14. ? of sound wave=
Weighted average of the masses of the element
V/??
F=qvBetasin?
2 times the focal distance

15. image created when converging (concave) mirror when object is placed beyond focal point
Real inverted image
None
Work/time
New/old

16. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
Negative
When ?=90 b/c sin90=1
Conduction
1000 kg/m^3 or 1 g/cm^3

17. work done by non conservative force

18. volume thermal expansion of a solid
Kg*m/s^2
Virtual upright smaller
?V=BetaV?T
More malleable material

19. density with units
?=m/v kg/m^3 g/ml g/cm^3
W=Fdcos?
?=2L/n
Surface

20. Gauss's Law
C=eoKA/D
Energy required to free electron from given metal
T=1/f
F=q/e0

21. relate velocities and displacement 2 ways
Substance is less dense then water
Vsin?
???
V^2=vo^2+2a?x ?x=1/2(vo+v)t

22. magnetic force
F=qvBetasin?
A=v^2/r
P=i^2R=V^2/R=IV
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

23. unit of current
Virtual upright
Cohesion
T=rFsin?
Ampere (1C/s)

24. potential energy of spring
When ?=90 b/c sin90=1
U=(1/2)kx^2
EV
2pr

25. (+) magnification signifies
Fluid resistance to flow
Upright image
Body in motion remains in motion unless net force acts upon it
Mass

26. excess energy of a photon is...
Image is always upright virtual and smaller
N=c/v
Converted to extra kinetic energy of the emitted electron
700nm -400nm

27. 45
F=1/2(r)
Pressure to move - voltage when no charge is moving between 2 terminals
Sin=v2/2 cos=v2/2
Points away from + and toward -

28. volumetric rate of flow (property)
V=kQ/r
Beta=
Constant for closed system independent of changes in area
E*r

29. 'real' side of a lens
1000 kg/m^3 or 1 g/cm^3
Side opposite From which light originates
373K 100
Substance is less dense then water

30. increase in velocity of a fluid is associated with
Virtual upright
Decrease in pressure that fluid exerts on the walls of the container
Internal resistance is zero voltage=emf
373K 100

31. electric flux
Emf is negative
Real inverted image
W'=?E=?KE+?U
F=E*A

32. reflection law
Angle of incidence=angle of reflection
?=4L/n
F=- kx
Cohesion

33. light bends toward normal when
N2>n1
F=Gm1m2/r^2
Number of protons
Ceq=C1+C2+C3 Veq=V1=V2=V3

34. length of resistor
Wave speed
Increase length increase resistance
Splitting of atomic nuclei
Incident light is used to free electrons from a metal

35. in calculating torque - which direction is + and which is
C=e(A/d)
Counterclockwise is + clockwise is -
Vcos?
Solid to gas

36. In what position does spring has its greatest speed
Equilibrium position
E=V/d
Sin=1/2 cos=v3/2
V=?A

37. power dissipated by resistor (3 ways)
Increase length increase resistance
Angle of incidence=angle of reflection
Light emitted due to heat
P=i^2R=V^2/R=IV

38. resistance in series
Virtual upright smaller
Req=R1+R2+R3 Veq=V1+V2+V3
?=m/v kg/m^3 g/ml g/cm^3
Amount of energy required for phase change from solid to liquid

39. magnification=
700nm -400nm
image/object
Virtual upright smaller
V=kQ/r

40. Log(1000)=
Centrioles
New/old
U=1/2QV=1/2CV^2=1/2Q^2/C
3

41. energy of photon
Req=R1+R2+R3 Veq=V1+V2+V3
F=I(L*B)
E=???=hc/?
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

42. a virtual image has what kind of image distance
Negative
?=m/v kg/m^3 g/ml g/cm^3
U=1/2QV=1/2CV^2=1/2Q^2/C
E=neE n is excess charge

43. capacitance equation in circuit
Gas to solid
Rate of doing work
C=Q/V
Energy of electrons

44. electrical power
Fnet=0 thus Fg=Fs mg=kx
F/A
Centrioles
P=IV

45. force experience by stationary particle in magnetic field
None
Yield strength
Approx .7
E=1/2k(A^2)

46. parabolic mirror: object between c and f - image is...
Electric fields of all the light waves are oriented in the same direction
Resistor
100% of the object will be submerged but will not sink
Bigger and beyond original object

47. index of refraction (n) equation
N=c/v
U=QV
More flow less resistance
Conduction

48. SI unit for pressure
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Perpendicular to each other
Pascal (Pa) N/m^2
Nsin?incident=nsin?refraction

49. Hooke's Law
Virtual
Charge/area
Converted to extra kinetic energy of the emitted electron
F=- kx

50. visible light wavelength
700nm -400nm
Kg*m/s^2
2pr
Centrioles