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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. resistance equation
R=pL/A
Buoyant force equals blocks weight
Q=mc?t
Virtual

2. relationship between linear thermal expansion and volumetric thermal expansion
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
None
Internal resistance is zero voltage=emf
3a=Beta

3. The bigger the cross - section of a resistor..
More flow less resistance
V/??
F=mv^2/r
B=(F/A)/(?V/V)

4. relate charge and current
Coulomb=amphere*sec
F=1/2(r)
V=?A
Bigger and beyond original object

5. gauge pressure in relation to the others
E=1/2k(A^2)
Difference between the absolute and atm pressure Pg=P- Patm
Counterclockwise is + clockwise is -
Emf is positive

6. momentum
V=IR
U=1/2QV=1/2CV^2=1/2Q^2/C
Force applied parallel to objects surface
P=m?v

7. circumference of a circle
Increases
Fluid resistance to flow
Vo^2+2a(?x)
2pr

8. viscosity
New/old
Rate of doing work
W=mg=?Vg
Fluid resistance to flow

9. magnetic field is created by loop wire - What is magnetic field at center of loop
Beta=
Vcos?
Energy gained by particle with charge of e when moved through one volt
I=P/A

10. work done by non conservative force

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11. diffraction
Mass
Decrease in pressure that fluid exerts on the walls of the container
None
Spreading out of light as it passes through a narrow opening

12. what creates a magnetic field
Vrms=Vmax/v2
N1>n2
Moving charge
P=i^2r

13. 180
P=IV
Will never decrease capacitance
Neutron is converted into a proton and an electron is emitted
Sin=0 cos=-1

14. under constant acceleration - v=
Solid to gas
Vo+at
Vot+1/2at^2=(V0+v/2)t
R=pL/A

15. atomic mass number represents
Higher temperature increases resistance
Protons+neutrons
T=rFsin?
Perpendicular to each other

16. increase in velocity of a fluid is associated with
Beta=
Ampere (1C/s)
Decrease in pressure that fluid exerts on the walls of the container
Q=mc?t

17. kirchhoff's rule -- travel from negative to positive
Equilibrium position
Emf is positive
N*s/m^2
Rate of doing work

18. study of fluids at rest
Mass number
Hydrostatics
Holds whenever we have a change in energy ?E=?KE+?PE=0
T=rFsin?

19. when spring is at rest
Negative
Virtual upright smaller
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Fnet=0 thus Fg=Fs mg=kx

20. -Beta- decay
Neutron is converted into a proton and an electron is emitted
(mass defect)(speed of light)^2
Is equal to gravitational force
Cohesion

21. When is torque maximum
F=xk=mg
When ?=90 b/c sin90=1
Is equal to gravitational force
Virtual upright

22. closed pipe frequency
Vbulk modulus
Number of protons
??=nv/4L
Frequency

23. pressure
M1v1=m2v2
Weighted average of the masses of the element
F/A
Converted to extra kinetic energy of the emitted electron

24. force experience by stationary particle in magnetic field
None
P=m?v
I=?q/?t
F=E*A

25. a virtual image has what kind of image distance
Negative
More rigid material
I=?q/?t
V=?A

26. gravitational force formula
Decrease in pressure that fluid exerts on the walls of the container
Virtual upright
V^2=vo^2+2a?x ?x=1/2(vo+v)t
F=Gm1m2/r^2

27. electrical power
F=- kx
100% of the object will be submerged but will not sink
F=ma
P=IV

28. Log(100)=
K+U=constant
2
Q=mc?t
Radiation

29. magnetic force
F=qvBetasin?
Ampere (1C/s)
F=E*A
Light emitted due to heat

30. period (T) and frequency (f) of a tone are related by
Pressure to move - voltage when no charge is moving between 2 terminals
T=1/f
X=(initial horizontal v)(time in air)
Charge/length

31. electric flux
N=c/v
F=E*A
N*s/m^2
F/A

32. electromotive force
V=IR
Pressure to move - voltage when no charge is moving between 2 terminals
Protons+neutrons
Current*voltage

33. charge of gamma particles
None
Proton or neutron
Zero resistance
?=vk/m=2p??

34. capacitance of simple parallel plate (not according to Ohms)
Voltage
???
C=e(A/d)
None

35. body in translational equilibrium
Splitting of atomic nuclei
Substance is less dense then water
No net force acting on it
Sin=v2/2 cos=v2/2

36. polarized light
U=1/2QV=1/2CV^2=1/2Q^2/C
Electric fields of all the light waves are oriented in the same direction
?x=1/2(v+vo)t
F1/A1=F2/A2

37. angular frequency of spring ?
F=mv^2/r
?=vk/m=2p??
700nm -400nm
F=nv/2L

38. Gauss's Law
F=q/e0
P=IV
No image is formed
Sin=1 cos=0

39. point of shape change beyond which a material can go back to normal
373K 100
image/object
2
Yield strength

40. index of refraction (n) equation
F=q/e0
N=c/v
F=1/2(r)
New/old

41. wavelength in string
Fs=
Farad 1 F= 1 c/v
?=2L/n
Incident ray

42. negative charge moves spontaneously from
Low voltage to high voltage
E=neE n is excess charge
Derive universal gravitation equation
F=nv/2L

43. larger the index of refraction..
Sin=v2/2 cos=v2/2
None
Slower light will travel
Derive universal gravitation equation

44. to find acceleration due to gravity
Derive universal gravitation equation
Kg*m/s^2
N=c/v
C=eoKA/D

45. equation for capacitance with dielectric
C=eoKA/D
2 times the focal distance
1000 kg/m^3 or 1 g/cm^3
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

46. max frequency of X- ray depends ONLY on...
Vbulk modulus
Energy of electrons
Equilibrium position
Vcos?

47. Formula for centripetal force
F=mv^2/r
Y=(F/A)/(?L/L) stress over strain
1000 kg/m^3 or 1 g/cm^3
J=Force*Time=mv - mvo=?p

48. 45
Sin=v2/2 cos=v2/2
Splitting of atomic nuclei
Beta=
None

49. period of spring
Force a molecule of liquid feels toward the other molecules of the liquid
2pvm/k
Incident light is used to free electrons from a metal
U=1/2QV=1/2CV^2=1/2Q^2/C

50. energy stored in capacitor
U=1/2QV=1/2CV^2=1/2Q^2/C
1/2mv^2
F=mv^2/r
F=q/e0