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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. ?
Force a molecule of liquid feels toward molecules of some other substance
T=rFsin?
Charge/length
F1/A1=F2/A2

2. relate velocities and displacement 2 ways
A=v^2/r
Spring constant
Coulomb=amphere*sec
V^2=vo^2+2a?x ?x=1/2(vo+v)t

3. speed of sound in proportional to...
None
Virtual upright
Vbulk modulus
Ceq=C1+C2+C3 Veq=V1=V2=V3

4. sound level
None
E=Pt
Beta=10Log(I/Io)
Higher temperature increases resistance

5. nucleon
Proton or neutron
Solute whose solution is conductive
Force and acceleration
Equilibrium position

6. diffraction
V=kq/r
Real inverted
Cohesion
Spreading out of light as it passes through a narrow opening

7. potential energy of spring
Splitting of atomic nuclei
F=E*A
N is proportional to 1/?
U=(1/2)kx^2

8. continuity equation*
Solute whose solution is conductive
Sin=v3/2 cos=1/2
image/object
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

9. solves for power lost during transmission (one way)
Resistor
P=i^2r
The shortest wavelength
F=1/2(r)

10. under content acceleration v^2=
N2>n1
Difference between the mass of nucleus and the sum of nucleons
Vo^2+2a(?x)
Neutron is converted into a proton and an electron is emitted

11. power (in general)
F=nv/2L
W=mg=?Vg
Work/time
Vot+1/2at^2=(V0+v/2)t

12. reflection law
K+U=constant
Angle of incidence=angle of reflection
W=qv
Rate of doing work

13. total energy of spring system
Angle of incidence=angle of reflection
E=1/2k(A^2)
Makes ?G more negative thus more spontaneous
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

14. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
1/2mv^2
Conduction
P=i^2r
V=?A

15. specific gravity is less than one
Substance is less dense then water
U=1/2QV=1/2CV^2=1/2Q^2/C
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
F=c/?

16. magnetic field force on current carrying wire
Decrease in pressure that fluid exerts on the walls of the container
F=I(L*B)
The liquid itself not the object
?L=aL?T

17. find factor by which something has been changed
New/old
Buoyant force equals blocks weight
Converted to extra kinetic energy of the emitted electron
Ceq=C1+C2+C3 Veq=V1=V2=V3

18. voltage of AC
C=e(A/d)
V^2=vo^2+2a?x ?x=1/2(vo+v)t
None
Vrms=Vmax/v2

19. magnification=
N2>n1
Kg*m/s^2
Buoyant force equals blocks weight
image/object

20. charge on the plates of a capacitor
Dispersion
Ampere (1C/s)
Q=CV
Real inverted image

21. What does atoms atomic weight represent
When velocity of the fluid exceeds critical velocity
Fnet=0 thus Fg=Fs mg=kx
Weighted average of the masses of the element
P=m?v

22. density with units
Convection
Force and acceleration
?=m/v kg/m^3 g/ml g/cm^3
F=I(L*B)

23. frequency in string
F=nv/2L
Current*voltage
F=mv^2/r
?=2L/n

24. when an electron absorbs a photon
Spring constant
Will never decrease capacitance
It jumps to higher energy level
V=IR

25. for object in SHM E=
R=pL/A
C=Q/V
None
K+U=constant

26. electric field and magnetic field are...
T=rF where F is proportional to mass and r is distance from pivot
Substance is less dense then water
Current*voltage
Perpendicular to each other

27. all harmonics have the same
Wave speed
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Convection
Virtual upright smaller

28. calculate lens power
P=1/f
Force a molecule of liquid feels toward molecules of some other substance
Buoyant force equals blocks weight
Sin=v2/2 cos=v2/2

29. centripetal acceleration
More rigid material
Image is always upright virtual and smaller
A=v^2/r
The shortest wavelength

30. velocity for a wave
V=???
Mass
Pascal (Pa) N/m^2
Spreading out of light as it passes through a narrow opening

31. amplitude of spring is proportional to...
Frequency
A Calorie is a nutritional term equal to 1000 calories
Energy of electrons
Force and acceleration

32. loudness of sound
Intensity
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Farad 1 F= 1 c/v
Gas to solid

33. torque is given by
Electric fields of all the light waves are oriented in the same direction
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
0K -273
T=rF where F is proportional to mass and r is distance from pivot

34. Find electric potential given electric field
E*r
It is halved
Longitudinal
No net force acting on it

35. light ray that strikes a surface
Fk=
Incident ray
Work/time
Solute whose solution is conductive

36. degrees to radians
Farad 1 F= 1 c/v
Degree=p/180 radian
image/object
F=E*A

37. audible wave frequency
Number of protons
Degree=p/180 radian
E=neE n is excess charge
20 Hz to 20 -000 Hz

38. formula for heat gained or lost during phase change
None
Vsin?
Q=mL
100% of the object will be submerged but will not sink

39. sublimation
Virtual upright
Force a molecule of liquid feels toward molecules of some other substance
Solid to gas
Higher temperature increases resistance

40. magnetic force
F=qvBetasin?
W=Fdcos?
F=- F
Substance is more dense then water

41. calculate binding energy
?=m/v kg/m^3 g/ml g/cm^3
Insulator
(mass defect)(speed of light)^2
Radiation

42. type of image ALWAYS created by diverging (convex) mirror
Virtual upright smaller
Body in motion remains in motion unless net force acts upon it
Converted to extra kinetic energy of the emitted electron
A sin?=n?

43. material with very high resistance
Image is always upright virtual and smaller
W'=?E=?KE+?U
Insulator
Cohesion

44. charge of gamma particles
Light travels from high n to lower n with an angle of incidence greater than the critical angle
W'=?E=?KE+?U
None
Fs=

45. power of sound wave
T=rF where F is proportional to mass and r is distance from pivot
P=IA
2pr
Cohesion

46. resistance equation
Makes ?G more negative thus more spontaneous
Kg*m/s^2
R=pL/A
Sin=1/2 cos=v3/2

47. material with low resistance
Conductor
Fluid resistance to flow
F=ma
Ceq=C1+C2+C3 Veq=V1=V2=V3

48. snells law
Angle of incidence=angle of reflection
More flow less resistance
Nsin?incident=nsin?refraction
?V=BetaV?T

49. beat frequencies for two frequencies differing by 4 Hz
F=E*A
4 Hz
Inverted image
Longitudinal

50. equation for kinetic friction
Fk=
Will never decrease capacitance
Current*voltage
3