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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. period (T) and frequency (f) of a tone are related by
Number of protons
Wave speed
V=IR
T=1/f

2. Hooke's Law
F=- kx
?=vk/m=2p??
E=Pt
?L=aL?T

3. photoelectric effect
Incident light is used to free electrons from a metal
The liquid itself not the object
Angle of incidence=angle of reflection
F1/A1=F2/A2

4. volume thermal expansion of a solid
Force a molecule of liquid feels toward the other molecules of the liquid
F/A
?V=BetaV?T
V=IR

5. Bernoulli's equation
Resistor
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
R=pL/A
Approx .7

6. resistance equation
R=pL/A
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Resistor
Vo^2+2a(?x)

7. capacitors in parallel
Ceq=C1+C2+C3 Veq=V1=V2=V3
Req=R1+R2+R3 Veq=V1+V2+V3
When in parallel
N2>n1

8. find energy in circuit
E=Pt
Approx .7
V=kQ/r
Dispersion

9. What is displacement equation
4 Hz
Energy required to free electron from given metal
?x=1/2(v+vo)t
Mass

10. beat frequencies for two frequencies differing by 4 Hz
4 Hz
V=kQ/r
E=???=hc/?
Virtual upright

11. light bends away from normal when
Degree=p/180 radian
Sin=0 cos=-1
N1>n2
3

12. kirchhoff's rule -- travel from negative to positive
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Emf is positive
Negative
Number of protons

13. degrees to radians
Makes ?G more negative thus more spontaneous
Degree=p/180 radian
Beta=10Log(I/Io)
Dispersion

14. z in isotopic notation
?L=aL?T
Longitudinal
Number of protons
Coulomb=amphere*sec

15. study of fluids at rest
Internal resistance is zero voltage=emf
Vo+at
Hydrostatics
N is proportional to 1/?

16. focal for spherical mirrors
F=1/2(r)
Inverted image
Insulator
Req=R1+R2+R3 Veq=V1+V2+V3

17. speed of light in a vacuum (c) =
Emf is positive
???
MRT
3a=Beta

18. units for newtons
Decrease in pressure that fluid exerts on the walls of the container
Kg*m/s^2
K+U=constant
Increases

19. torque formula
Current*voltage
More malleable material
Real inverted
T=rFsin?

20. equation for kinetic friction
Longitudinal
Real image
Fk=
F/A

21. snell's law derivative
2
F=E*A
N is proportional to 1/?
Spring constant

22. tone with shortest period has
Emf is positive
The shortest wavelength
Vrms=Vmax/v2
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

23. frequency of light given wavelength
373K 100
F=c/?
F=xk=mg
Emf is negative

24. force experienced by moving charge traveling parallel or antiparallel to magnetic field
F=xk=mg
Fk=
1/f=1/o+ 1/i
None

25. surface tension results from
Cohesion
Solute whose solution is conductive
Fnet=0 thus Fg=Fs mg=kx
Perpendicular to each other

26. cohesion
EV
M1v1=m2v2
Force a molecule of liquid feels toward the other molecules of the liquid
F=xk=mg

27. Log(1000)=
Points away from + and toward -
Amount of energy required for phase change from solid to liquid
T=rFsin?
3

28. increase in velocity of a fluid is associated with
1000 kg/m^3 or 1 g/cm^3
Decrease in pressure that fluid exerts on the walls of the container
Negative
Beta=

29. parabolic mirror: image at focal point
MRT
Work/time
No image is formed
V=kq/r

30. formula for impulse (J)
J=Force*Time=mv - mvo=?p
The shortest wavelength
Beta=
Neutron is converted into a proton and an electron is emitted

31. speed of the spring
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
V=?A
Proton or neutron
?=2L/n

32. 60
I=?q/?t
Sin=v3/2 cos=1/2
Diopters
Kg*m/s^2

33. potential energy of spring
When in parallel
Hydrostatics
U=(1/2)kx^2
?=m/v kg/m^3 g/ml g/cm^3

34. planet orbiting a star - centripetal force
F=qvBetasin?
Is equal to gravitational force
Pascal (Pa) N/m^2
More rigid material

35. When is voltage constant across capacitors
Is equal to gravitational force
F=ma
When in parallel
F=- kx

36. intensity of sound
B=(F/A)/(?V/V)
Protons+neutrons
Fluid resistance to flow
I=P/A

37. image created when converging (concave) mirror when object is placed beyond focal point
The liquid itself not the object
E=Pt
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Real inverted image

38. relate focal length and radius of curvature(r)
Force a molecule of liquid feels toward the other molecules of the liquid
F=r/2
W'=?E=?KE+?U
Negative

39. units for viscosity
The shortest wavelength
Convection
B=(F/A)/(?V/V)
N*s/m^2

40. voltage of AC
Vrms=Vmax/v2
2pr
V=kQ/r
V/??

41. ?
Charge remains constant
Charge/length
E=Pt
273K 0

42. Log(100)=
Fk=
Light emitted due to heat
2
Incident ray

43. electrical power
P=IV
Gamma decay
When in parallel
2pr

44. unit for energy beside J
E=???=hc/?
Beta=10Log(I/Io)
EV
Converted to extra kinetic energy of the emitted electron

45. volumetric rate of flow (property)
V=IR
Incident ray
Constant for closed system independent of changes in area
It jumps to higher energy level

46. only radioactive decay that conserves the nucleus charge
Gamma decay
Pascal (Pa) N/m^2
Neutron is converted into a proton and an electron is emitted
?=vk/m=2p??

47. light ray that strikes a surface
Incident ray
R=pL/A
A sin?=n?
F=q/e0

48. location of minima in diffraction pattern
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Sin=0 cos=1
A sin?=n?
373K 100

49. fungal cells unlike animals cells do not contain
0K -273
F=xk=mg
Centrioles
K+U=constant

50. electric field and magnetic field are...
2
Perpendicular to each other
1000 kg/m^3 or 1 g/cm^3
K+U=constant