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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. negative charge moves spontaneously from
F=q/e0
Low voltage to high voltage
None
Slower light will travel

2. visible light wavelength
Q=CV
700nm -400nm
P=i^2R=V^2/R=IV
Perpendicular to each other

3. power dissipated by resistor (3 ways)
?=vk/m=2p??
Ampere (1C/s)
P=i^2R=V^2/R=IV
V=???

4. electric field equation
Real inverted image
Photon energy must be greater than work function of the material
P=IA
E=kQ/r^2

5. across capacitor what remains constant
Proton or neutron
Voltage
Charge/length
?V=BetaV?T

6. center of curvature is...
Amount of energy required for phase change from solid to liquid
Force applied parallel to objects surface
2 times the focal distance
Ceq=C1+C2+C3 Veq=V1=V2=V3

7. units for newtons
Weighted average of the masses of the element
Buoyant force equals blocks weight
Kg*m/s^2
N2>n1

8. beat frequencies for two frequencies differing by 4 Hz
V=ED
4 Hz
It jumps to higher energy level
Intensity

9. osmotic pressure formula
MRT
Force a molecule of liquid feels toward molecules of some other substance
It jumps to higher energy level
C=e(A/d)

10. resistance in parallel
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Image is always upright virtual and smaller
Virtual upright
T=rF where F is proportional to mass and r is distance from pivot

11. units for capacitance
Force a molecule of liquid feels toward the other molecules of the liquid
Farad 1 F= 1 c/v
P=IV
Cohesion

12. work as it relates to constant force
Difference between the absolute and atm pressure Pg=P- Patm
Beta=
W=Fdcos?
No image is formed

13. momentum
P=m?v
P=1/f
W=mg=?Vg
C=e(A/d)

14. polarized light
100% of the object will be submerged but will not sink
Sin=0 cos=-1
Electric fields of all the light waves are oriented in the same direction
P=m?v

15. equation for capacitance with dielectric
Mass
Virtual upright smaller
Dispersion
C=eoKA/D

16. incandescence
Light emitted due to heat
Constant for closed system independent of changes in area
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
When velocity of the fluid exceeds critical velocity

17. charge on the plates of a capacitor
Internal resistance is zero voltage=emf
Q=CV
P=IA
P=i^2R=V^2/R=IV

18. loudness of sound
Perpendicular to each other
T=1/f
Intensity
Charge/area

19. period of pendulum
2pvL/g
Force applied parallel to objects surface
Sin=v2/2 cos=v2/2
(Vo+v)/2

20. when an electron absorbs a photon
Charge remains constant
Is equal to gravitational force
Longitudinal
It jumps to higher energy level

21. Newtons 2nd law of motion
E=???=hc/?
E=V/d
F=ma
Charge/area

22. When does turbulence in a fluid arise
When velocity of the fluid exceeds critical velocity
Energy of electrons
Protons+neutrons
3

23. force due to electric field on single charge
Negative
E=neE n is excess charge
?=2L/n
N1>n2

24. amplitude of spring is proportional to...
Force and acceleration
Intensity
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Q=CV

25. sound waves are what kind of waves
M1v1=m2v2
Sin=1 cos=0
More rigid material
Longitudinal

26. torque is given by
Farad 1 F= 1 c/v
T=rF where F is proportional to mass and r is distance from pivot
Sin=1/2 cos=v3/2
?L=aL?T

27. find voltage (original)
273K 0
V=kq/r
Gas to solid
Sin=v3/2 cos=1/2

28. parabolic mirror: object in front of focal point
V=ED
Virtual upright
W'=?E=?KE+?U
B=

29. electromotive force
Cohesion
Pressure to move - voltage when no charge is moving between 2 terminals
Vrms=Vmax/v2
2

30. mass defect
Difference between the mass of nucleus and the sum of nucleons
Gas to solid
Negative
W=qv

31. (+) magnification signifies
F=q/e0
Upright image
F=mv^2/r
Spreading out of light as it passes through a narrow opening

32. energy of a photon is dependent on...
Fs=
Insulator
Frequency
When in parallel

33. capacitors in parallel
Ceq=C1+C2+C3 Veq=V1=V2=V3
Amount of energy required for phase change from solid to liquid
Image is always upright virtual and smaller
Negative

34. Newtons 3rd law of motion
Sin=1/2 cos=v3/2
F=- F
Difference between the mass of nucleus and the sum of nucleons
Ceq=C1+C2+C3 Veq=V1=V2=V3

35. suppose a block is floating in H2O - What does this mean
Buoyant force equals blocks weight
Energy of electrons
Decrease in pressure that fluid exerts on the walls of the container
F=nv/2L

36. absolute zero in K and C
0K -273
Spreading out of light as it passes through a narrow opening
R=pL/A
It jumps to higher energy level

37. bulk modulus
Beta=
B=(F/A)/(?V/V)
Proton or neutron
Real inverted

38. What is displacement equation
W=qv
?x=1/2(v+vo)t
No net force acting on it
F=I(L*B)

39. closed pipe frequency
Kg*m/s^2
Internal resistance is zero voltage=emf
0K -273
??=nv/4L

40. equation for static friction
F=mv^2/r
Fs=
4 Hz
?=m/v kg/m^3 g/ml g/cm^3

41. image created by converging (concave) mirror when object is placed inside focal point
Convection
Virtual upright
F=r/2
Longitudinal

42. lever arm is halved what happens to torque
Real inverted
273K 0
It is halved
N1>n2

43. equation for kinetic friction
Longitudinal
Vcos?
Fk=
Fs=

44. capacitance of simple parallel plate (not according to Ohms)
Buoyant force equals blocks weight
Increases
C=e(A/d)
(Vo+v)/2

45. energy of moving proton
Ampere (1C/s)
Charge/area
Pressure to move - voltage when no charge is moving between 2 terminals
1/2mv^2

46. convex mirror
Image is always upright virtual and smaller
Work/time
Resistor
N2>n1

47. material with moderate resistance
Internal resistance is zero voltage=emf
Y=(F/A)/(?L/L) stress over strain
Resistor
U=1/2QV=1/2CV^2=1/2Q^2/C

48. 30
Emf is negative
Image is always upright virtual and smaller
Sin=1/2 cos=v3/2
C=eoKA/D

49. light bends away from normal when
Nsin?incident=nsin?refraction
Force and acceleration
C=eoKA/D
N1>n2

50. electrical power
Virtual
A=v^2/r
Sin=0 cos=1
P=IV