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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. to find acceleration due to gravity
Voltage
Derive universal gravitation equation
F=xk=mg
Spreading out of light as it passes through a narrow opening

2. index of refraction (n) equation
V=?A
Sin=0 cos=1
Number of protons in nucleus
N=c/v

3. (-) magnification signifies
Inverted image
Protons+neutrons
Beta=
Current*voltage

4. energy of photon
F=E*A
Neutron is converted into a proton and an electron is emitted
Moving charge
E=???=hc/?

5. velocity for a wave
Force a molecule of liquid feels toward the other molecules of the liquid
F=mv^2/r
Diopters
V=???

6. conservation of energy law
Diopters
W'=?E=?KE+?U
?=4L/n
Holds whenever we have a change in energy ?E=?KE+?PE=0

7. type of heat transfer involving transfer of energy by electromagnetic waves
Virtual upright
Radiation
Makes ?G more negative thus more spontaneous
V=kq/r

8. units for newtons
Kg*m/s^2
Vbulk modulus
Constant for closed system independent of changes in area
MRT

9. osmotic pressure formula
MRT
Number of protons
Ampere (1C/s)
V^2=vo^2+2a?x ?x=1/2(vo+v)t

10. negative charge moves spontaneously from
Fusion
Low voltage to high voltage
When ?=90 b/c sin90=1
Vsin?

11. light ray that strikes a surface
Vrms=Vmax/v2
Incident ray
2 times the focal distance
E=neE n is excess charge

12. work done by non conservative force

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13. torque is given by
T=rFsin?
Incident light is used to free electrons from a metal
T=rF where F is proportional to mass and r is distance from pivot
R=pL/A

14. formula for impulse (J)
Q=mc?t
E=neE n is excess charge
???
J=Force*Time=mv - mvo=?p

15. buoyant force is due to...
Wave speed
Fs=
Conductor
The liquid itself not the object

16. snell's law derivative
?x=1/2(v+vo)t
N is proportional to 1/?
T=rF where F is proportional to mass and r is distance from pivot
N=c/v

17. across capacitor what remains constant
Voltage
F=ma
Negative
Fluid resistance to flow

18. for photoelectric material to liberate an electron
Photon energy must be greater than work function of the material
Fs=
V/??
Amount of energy required for phase change from solid to liquid

19. What is heat of fusion
Charge/length
W=mg=?Vg
Will never decrease capacitance
Amount of energy required for phase change from solid to liquid

20. 180
F=- F
Longitudinal
Frequency
Sin=0 cos=-1

21. Newtons 2nd law of motion
Buoyant force equals blocks weight
F=ma
Proton or neutron
Yield strength

22. (+) magnification signifies
Radiation
Current*voltage
When velocity of the fluid exceeds critical velocity
Upright image

23. potential energy of spring
F=qvBetasin?
U=(1/2)kx^2
Protons+neutrons
Resistor

24. focal length
Nsin?incident=nsin?refraction
None
1/f=1/o+ 1/i
Photon energy must be greater than work function of the material

25. find factor by which something has been changed
New/old
Photon energy must be greater than work function of the material
Real inverted
F=nv/2L

26. snells law
Nsin?incident=nsin?refraction
A Calorie is a nutritional term equal to 1000 calories
Pressure to move - voltage when no charge is moving between 2 terminals
Virtual upright

27. energy of a photon is dependent on...
Pascal (Pa) N/m^2
No image is formed
X=(initial horizontal v)(time in air)
Frequency

28. equation for kinetic friction
Spring constant
Fk=
B=
Negative

29. material with low resistance
Rate of doing work
M1v1=m2v2
Conductor
Frequency

30. -Beta- decay
F=c/?
Neutron is converted into a proton and an electron is emitted
F=nv/2L
Sin=1 cos=0

31. a lightbulb in a circuit is a
373K 100
Dispersion
Resistor
Sin=0 cos=-1

32. youngs modulus
Voltage
V=IR
Y=(F/A)/(?L/L) stress over strain
Emf is positive

33. density of water
Emf is positive
Farad 1 F= 1 c/v
1000 kg/m^3 or 1 g/cm^3
W=mg=?Vg

34. vertical velocity of projectile
Vsin?
Q=mc?t
Upright image
Nsin?incident=nsin?refraction

35. period of spring
Electric fields of all the light waves are oriented in the same direction
P=IA
2pvm/k
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

36. for object in SHM E=
B=
K+U=constant
MRT
Degree=p/180 radian

37. period (T) and frequency (f) of a tone are related by
T=1/f
M1v1=m2v2
2pvL/g
?=m/v kg/m^3 g/ml g/cm^3

38. excess energy of a photon is...
Dispersion
Converted to extra kinetic energy of the emitted electron
?x=1/2(v+vo)t
?=2L/n

39. Log(1000)=
Rate of doing work
Convection
3
Hydrostatics

40. capacitance equation in circuit
Spreading out of light as it passes through a narrow opening
700nm -400nm
Perpendicular to each other
C=Q/V

41. relate velocities and displacement 2 ways
E=Pt
U=QV
V^2=vo^2+2a?x ?x=1/2(vo+v)t
V=?A

42. work as product of pressure and volume change
Vo+at
Vsin?
F=- kx
F1/A1=F2/A2

43. The bigger the cross - section of a resistor..
U=1/2QV=1/2CV^2=1/2Q^2/C
More flow less resistance
Req=R1+R2+R3 Veq=V1+V2+V3
Intensity

44. power dissipated by resistor (3 ways)
Rate of doing work
T=1/f
Number of protons
P=i^2R=V^2/R=IV

45. equation for capacitance with dielectric
C=eoKA/D
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Nsin?incident=nsin?refraction
When ?=90 b/c sin90=1

46. energy of moving proton
1/2mv^2
Fk=
Work/time
When ?=90 b/c sin90=1

47. units for power
100% of the object will be submerged but will not sink
P=m?v
Emf is positive
WATTS

48. open pipe wavelength
?=2L/n
Emf is negative
Degree=p/180 radian
Vbulk modulus

49. total horizontal distance traveled by projectile
V=ED
X=(initial horizontal v)(time in air)
Light emitted due to heat
Pressure to move - voltage when no charge is moving between 2 terminals

50. unit of current
Angle of incidence=angle of reflection
Derive universal gravitation equation
Vcos?
Ampere (1C/s)