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MCAT Physics Formulas

Subjects : mcat, science

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
2
Conduction
Real image
Number of protons

2. reflection law
Sin=v3/2 cos=1/2
Angle of incidence=angle of reflection
Sin=1/2 cos=v3/2
Emf is negative

3. wave velocity=
Energy gained by particle with charge of e when moved through one volt
???
F=I(L*B)
Hydrostatics

4. Bernoulli's equation
Gas to solid
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Increases
E=Pt

5. frequency of light given wavelength
Incident light is used to free electrons from a metal
F=c/?
Sin=v2/2 cos=v2/2
(mass defect)(speed of light)^2

6. magnetic field force on current carrying wire
Intensity
F=I(L*B)
T=rFsin?
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

7. capacitance equation in circuit
0K -273
No image is formed
Pressure to move - voltage when no charge is moving between 2 terminals
C=Q/V

8. equation relating heat gained and temperature change
V=IR
Q=mc?t
1/f=1/o+ 1/i
Current*voltage

9. resistance in series
Req=R1+R2+R3 Veq=V1+V2+V3
B=(F/A)/(?V/V)
E=V/d
E=Pt

10. As current flows through a resistor
I=P/A
?=2L/n
Virtual upright
Charge remains constant

11. for photoelectric material to liberate an electron
20 Hz to 20 -000 Hz
Photon energy must be greater than work function of the material
N2>n1
Convection

12. What is displacement equation
Surface
?x=1/2(v+vo)t
Real inverted image
K+U=constant

13. equation for kinetic friction
V=???
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Fk=
Work/time

14. light ray that strikes a surface
V=ED
Real inverted
V=IR
Incident ray

15. formula for solution which is diluted related to initial concentration
J=Force*Time=mv - mvo=?p
M1v1=m2v2
Real inverted
The shortest wavelength

16. speed of the spring
V=?A
T=rFsin?
V=IR
Resistor

17. magnetic field is created by loop wire - What is magnetic field at center of loop
4 Hz
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Beta=
Charge remains constant

18. total horizontal distance traveled by projectile
None
X=(initial horizontal v)(time in air)
F=ma
Sin=v2/2 cos=v2/2

19. loudness of sound
2pvm/k
Farad 1 F= 1 c/v
Intensity
Vrms=Vmax/v2

20. threshold frequency (photoelectric effect)
When ?=90 b/c sin90=1
Weighted average of the masses of the element
3
Minimum frequency of light that will cause emission of an electron

21. planet orbiting a star - centripetal force
Charge/length
Is equal to gravitational force
P=i^2r
J=Force*Time=mv - mvo=?p

22. calculate lens power
More rigid material
Sin=0 cos=-1
P=1/f
2

23. current of AC
V/??
2 times the focal distance
Centrioles
Irms=Imax/v2

24. SI unit for pressure
Pascal (Pa) N/m^2
Protons+neutrons
Emf is positive
E=Pt

25. period of spring
2pvm/k
E=1/2k(A^2)
V=?A
Charge/area

26. ideal ammeter
Frequency
Kg*m/s^2
Zero resistance
Sin=1/2 cos=v3/2

27. work function
T=1/f
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Number of protons
Energy required to free electron from given metal

28. What is an electron volt (eV)
I=P/A
Angle of incidence=angle of reflection
P=IV
Energy gained by particle with charge of e when moved through one volt

29. a in isotopic notation
New/old
C=Q/V
20 Hz to 20 -000 Hz
Mass number

30. Find electric potential given electric field
E*r
P=i^2r
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
N*s/m^2

31. units for power
Kg*m/s^2
Fluid resistance to flow
Converted to extra kinetic energy of the emitted electron
WATTS

32. snells law
F=q/e0
Will never decrease capacitance
P=i^2R=V^2/R=IV
Nsin?incident=nsin?refraction

33. atoms atomic number represents
Fnet=0 thus Fg=Fs mg=kx
Number of protons in nucleus
As speed of fluid increases pressure and potential energy decrease
Splitting of atomic nuclei

34. buoyant force is due to...
Vcos?
P=m?v
Vo^2+2a(?x)
The liquid itself not the object

35. relationship between linear thermal expansion and volumetric thermal expansion
EV
3a=Beta
Virtual upright
Real inverted image

36. when an electron absorbs a photon
E=???=hc/?
Emf is positive
?V=BetaV?T
It jumps to higher energy level

37. atomic mass number represents
No image is formed
Fk=
Beta=
Protons+neutrons

38. period (T) and frequency (f) of a tone are related by
Low voltage to high voltage
T=1/f
Vbulk modulus
W=qv

39. (-) magnification signifies
Vcos?
Neutron is converted into a proton and an electron is emitted
Inverted image
When velocity of the fluid exceeds critical velocity

40. electrical power
Y=(F/A)/(?L/L) stress over strain
?L=aL?T
P=IV
X=(initial horizontal v)(time in air)

41. type of heat transfer involving transfer of energy by electromagnetic waves
N=c/v
Radiation
A sin?=n?
Zero resistance

42. when unlike charges move away from each other - U of the system
F=Gm1m2/r^2
Increases
Fnet=0 thus Fg=Fs mg=kx
Slower light will travel

43. When is torque maximum
I=P/A
F/A
When ?=90 b/c sin90=1
U=QV

44. electrolyte
Light emitted due to heat
Solute whose solution is conductive
Constant for closed system independent of changes in area
W=mg=?Vg

45. unit for energy beside J
EV
Centrioles
Y=(F/A)/(?L/L) stress over strain
Sin=1 cos=0

46. image created when converging (concave) mirror when object is placed beyond focal point
Real inverted image
Surface
Negative
Constant for closed system independent of changes in area

47. frequency in string
Decrease in pressure that fluid exerts on the walls of the container
F=nv/2L
Force and acceleration
Virtual upright

48. 90
Makes ?G more negative thus more spontaneous
N=c/v
Photon energy must be greater than work function of the material
Sin=1 cos=0

49. gauge pressure in relation to the others
More malleable material
3
Real image
Difference between the absolute and atm pressure Pg=P- Patm

50. momentum
It jumps to higher energy level
P=m?v
Ampere (1C/s)
E*r

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MCAT Physics Formulas

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