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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. center of curvature is...
Zero resistance
2 times the focal distance
700nm -400nm
??=nv/4L

2. calculate binding energy
W=Fdcos?
P=i^2r
Frequency
(mass defect)(speed of light)^2

3. visible light wavelength
R=pL/A
Fluid resistance to flow
N is proportional to 1/?
700nm -400nm

4. snells law
?V=BetaV?T
Nsin?incident=nsin?refraction
Resistor
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

5. thermal expansion of a solid
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
?L=aL?T
?=2L/n
Constant for closed system independent of changes in area

6. image created when converging (concave) mirror when object is placed beyond focal point
Real inverted image
A=v^2/r
Sin=0 cos=-1
Frequency

7. work as product of pressure and volume change
Radiation
F1/A1=F2/A2
F=nv/2L
V=ED

8. parabolic mirror: image at focal point
No image is formed
P=IV
Insulator
Kg*m/s^2

9. focal for spherical mirrors
Intensity
Derive universal gravitation equation
R=pL/A
F=1/2(r)

10. open pipe frequency
F=nv/2L
F=Gm1m2/r^2
F=ma
F/A

11. direction of electric field created by charge
Points away from + and toward -
Nsin?incident=nsin?refraction
Beta=10Log(I/Io)
V/??

12. kirchhoff's rule -- travel from negative to positive
Emf is positive
Makes ?G more negative thus more spontaneous
700nm -400nm
Pressure to move - voltage when no charge is moving between 2 terminals

13. As current flows through a resistor
Charge remains constant
Low voltage to high voltage
None
No net force acting on it

14. specific gravity is less than one
It jumps to higher energy level
Number of protons
Substance is less dense then water
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

15. frequency of spring is proportional to...
2 times the focal distance
Coulomb=amphere*sec
Spring constant
F/A

16. audible wave frequency
Frequency
V/??
K+U=constant
20 Hz to 20 -000 Hz

17. cohesion
Sin=v3/2 cos=1/2
Force a molecule of liquid feels toward the other molecules of the liquid
V=?A
Number of protons

18. what would a specific gravity of 1 indicate
Vot+1/2at^2=(V0+v/2)t
100% of the object will be submerged but will not sink
W'=?E=?KE+?U
B=(F/A)/(?V/V)

19. absolute zero in K and C
Diopters
Dispersion
0K -273
Holds whenever we have a change in energy ?E=?KE+?PE=0

20. When is torque maximum
Force a molecule of liquid feels toward the other molecules of the liquid
Coulomb=amphere*sec
MRT
When ?=90 b/c sin90=1

21. frequency of light given wavelength
(Vo+v)/2
V=kQ/r
Holds whenever we have a change in energy ?E=?KE+?PE=0
F=c/?

22. suppose a block is floating in H2O - What does this mean
Buoyant force equals blocks weight
(1/2)?v^2
V=kQ/r
Number of protons

23. closed pipe wavelength
Substance is less dense then water
Weighted average of the masses of the element
Number of protons
?=4L/n

24. work function
Resistor
Weighted average of the masses of the element
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Energy required to free electron from given metal

25. magnetic field force on current carrying wire
F=I(L*B)
It jumps to higher energy level
Energy of electrons
?=2L/n

26. capacitance of simple parallel plate (not according to Ohms)
A Calorie is a nutritional term equal to 1000 calories
C=e(A/d)
N*s/m^2
Points away from + and toward -

27. force due to electric field on single charge
F=xk=mg
Force a molecule of liquid feels toward the other molecules of the liquid
Image is always upright virtual and smaller
E=neE n is excess charge

28. (-) magnification signifies
(mass defect)(speed of light)^2
Inverted image
T=rFsin?
F=nv/2L

29. solves for power lost during transmission (one way)
Counterclockwise is + clockwise is -
None
Emf is positive
P=i^2r

30. fission
Splitting of atomic nuclei
E=V/d
W=mg=?Vg
P=IV

31. material with moderate resistance
1000 kg/m^3 or 1 g/cm^3
Vsin?
Resistor
V=kq/r

32. magnification=
image/object
Number of protons in nucleus
V=kQ/r
None

33. dielectric material
Splitting of atomic nuclei
Will never decrease capacitance
Is equal to gravitational force
Incident light is used to free electrons from a metal

34. charge of beta particles
Force a molecule of liquid feels toward molecules of some other substance
Negative
U=q?v
Virtual upright smaller

35. equation relating heat gained and temperature change
Sin=0 cos=1
F=- kx
Pressure to move - voltage when no charge is moving between 2 terminals
Q=mc?t

36. all harmonics have the same
When velocity of the fluid exceeds critical velocity
Incident light is used to free electrons from a metal
Wave speed
K+U=constant

37. The bigger the cross - section of a resistor..
C=e(A/d)
More flow less resistance
Radiation
Amount of energy required for phase change from solid to liquid

38. magnetic force
1000 kg/m^3 or 1 g/cm^3
Slower light will travel
F=qvBetasin?
Vo^2+2a(?x)

39. equation for static friction
1000 kg/m^3 or 1 g/cm^3
Fs=
P=m?v
F=E*A

40. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
Points away from + and toward -
V=kq/r
Conduction
Force and acceleration

41. small moduli value
More malleable material
B=
A sin?=n?
P=1/f

42. density of water
Surface
1000 kg/m^3 or 1 g/cm^3
A=v^2/r
3

43. When does turbulence in a fluid arise
Cohesion
Moving charge
F=E*A
When velocity of the fluid exceeds critical velocity

44. type of heat transfer involving transfer of energy by electromagnetic waves
Substance is more dense then water
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Radiation
Equilibrium position

45. units for capacitance
Substance is more dense then water
20 Hz to 20 -000 Hz
Farad 1 F= 1 c/v
Coulomb=amphere*sec

46. 'real' side of a lens
2pvm/k
Dispersion
Side opposite From which light originates
?L=aL?T

47. Hooke's Law
Converted to extra kinetic energy of the emitted electron
N1>n2
Conductor
F=- kx

48. units for power of a lens
Vcos?
Perpendicular to each other
Diopters
N1>n2

49. resistance equation
Is equal to gravitational force
Fnet=0 thus Fg=Fs mg=kx
R=pL/A
Hydrostatics

50. under constant acceleration V(average)=
(Vo+v)/2
Image is always upright virtual and smaller
273K 0
Q=mL