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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.
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. in calculating torque - which direction is + and which is
Counterclockwise is + clockwise is -
3
WATTS
?=4L/n

2. what would a specific gravity of 1 indicate
???
Makes ?G more negative thus more spontaneous
Frequency
100% of the object will be submerged but will not sink

3. ?
W'=?E=?KE+?U
F=mv^2/r
P=i^2r
Charge/length

4. absolute zero in K and C
Difference between the mass of nucleus and the sum of nucleons
B=(F/A)/(?V/V)
MRT
0K -273

5. index of refraction (n) equation
F1/A1=F2/A2
N=c/v
1/f=1/o+ 1/i
Virtual

6. Capacitors in series
C=e(A/d)
Angle of incidence=angle of reflection
F=c/?
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

7. vertical velocity of projectile
Fs=
2pr
Negative
Vsin?

8. relate velocities and displacement 2 ways
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Spreading out of light as it passes through a narrow opening
Energy gained by particle with charge of e when moved through one volt
Incident light is used to free electrons from a metal

9. type of heat transfer involving transfer of energy by electromagnetic waves
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Radiation
Centrioles
Is equal to gravitational force

10. equation for static friction
X=(initial horizontal v)(time in air)
P=i^2R=V^2/R=IV
Gamma decay
Fs=

11. center of curvature is...
F=r/2
Equilibrium position
2 times the focal distance
Pressure to move - voltage when no charge is moving between 2 terminals

12. torque formula
E=Pt
Buoyant force equals blocks weight
Substance is more dense then water
T=rFsin?

13. magnitude of magnetic field for current carrying wire
Ceq=C1+C2+C3 Veq=V1=V2=V3
Pascal (Pa) N/m^2
Virtual upright
Beta=

14. diffraction
F=q/e0
Gas to solid
Is equal to gravitational force
Spreading out of light as it passes through a narrow opening

15. equation relating heat gained and temperature change
Spring constant
E=1/2k(A^2)
Q=mc?t
Decrease in pressure that fluid exerts on the walls of the container

16. nucleon
Proton or neutron
Insulator
More flow less resistance
Sin=1/2 cos=v3/2

17. frequency of spring is inversely proportional to...
F=nv/2L
Sin=1/2 cos=v3/2
E=Pt
Mass

18. increase in velocity of a fluid is associated with
Energy required to free electron from given metal
Decrease in pressure that fluid exerts on the walls of the container
Fluid resistance to flow
Spring constant

19. intensity of sound
Sin=1 cos=0
Cohesion
I=P/A
It is halved

20. splitting of white light in a prim is an example of...
3a=Beta
Dispersion
??=nv/4L
Sin=0 cos=-1

21. polarized light
New/old
When ?=90 b/c sin90=1
Electric fields of all the light waves are oriented in the same direction
E*r

22. dielectric material
Will never decrease capacitance
Is equal to gravitational force
U=(1/2)kx^2
Amount of energy required for phase change from solid to liquid

23. ideal ammeter
Virtual
Zero resistance
None
Vo+at

24. image created by converging (concave) mirror when object is placed inside focal point
Force applied parallel to objects surface
Work/time
Virtual upright
P=m?v

25. incandescence
Negative
J=Force*Time=mv - mvo=?p
Sin=1 cos=0
Light emitted due to heat

26. specific gravity is less than one
Decrease in pressure that fluid exerts on the walls of the container
Pressure to move - voltage when no charge is moving between 2 terminals
Converted to extra kinetic energy of the emitted electron
Substance is less dense then water

27. focal length
1/f=1/o+ 1/i
Charge remains constant
0K -273
Points away from + and toward -

28. closed pipe wavelength
Resistor
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
A=v^2/r
?=4L/n

29. relationship between linear thermal expansion and volumetric thermal expansion
Ceq=C1+C2+C3 Veq=V1=V2=V3
Vo^2+2a(?x)
Sin=1/2 cos=v3/2
3a=Beta

30. what creates a magnetic field
Moving charge
Nsin?incident=nsin?refraction
Irms=Imax/v2
F=xk=mg

31. density with units
More malleable material
Nsin?incident=nsin?refraction
?=m/v kg/m^3 g/ml g/cm^3
Beta=

32. (+) magnification signifies
2
Fluid resistance to flow
Force a molecule of liquid feels toward the other molecules of the liquid
Upright image

33. units for viscosity
Minimum frequency of light that will cause emission of an electron
Sin=v2/2 cos=v2/2
Beta=
N*s/m^2

34. magnitude of current
F=xk=mg
I=?q/?t
Q=mc?t
V=?A

35. bulk modulus
?L=aL?T
Sin=1 cos=0
Photon energy must be greater than work function of the material
B=(F/A)/(?V/V)

36. resistance in parallel
P=IA
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Counterclockwise is + clockwise is -
Sin=v2/2 cos=v2/2

37. excess energy of a photon is...
F=nv/2L
Converted to extra kinetic energy of the emitted electron
?=vk/m=2p??
Increase length increase resistance

38. for photoelectric material to liberate an electron
Photon energy must be greater than work function of the material
Vcos?
Centrioles
More flow less resistance

39. What does atoms atomic weight represent
Upright image
Weighted average of the masses of the element
Internal resistance is zero voltage=emf
1/f=1/o+ 1/i

40. potential energy of spring
Spring constant
U=(1/2)kx^2
Proton or neutron
Protons+neutrons

41. volume thermal expansion of a solid
Ampere (1C/s)
F/A
When in parallel
?V=BetaV?T

42. In what position does spring has its greatest speed
When in parallel
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Surface
Equilibrium position

43. sublimation
Difference between the mass of nucleus and the sum of nucleons
Solid to gas
E=neE n is excess charge
Neutron is converted into a proton and an electron is emitted

44. current of AC
Irms=Imax/v2
Negative
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
U=QV

45. work function
W'=?E=?KE+?U
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Energy required to free electron from given metal
Vot+1/2at^2=(V0+v/2)t

46. -Beta- decay
E=Pt
Neutron is converted into a proton and an electron is emitted
?=4L/n
Weighted average of the masses of the element

47. Newtons 1st law of motion
Body in motion remains in motion unless net force acts upon it
Substance is less dense then water
Negative
More rigid material

48. resistance in series
Req=R1+R2+R3 Veq=V1+V2+V3
(mass defect)(speed of light)^2
Moving charge
Q=mc?t

49. find energy in circuit
Upright image
None
E=Pt
Constant for closed system independent of changes in area

50. Electric Potential equation
R=pL/A
Vcos?
P=IV
V=kQ/r