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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. intensity of sound
Solute whose solution is conductive
F=nv/2L
I=P/A
Sin=1/2 cos=v3/2

2. increasing emf has What effect on ?G
Cohesion
It is halved
Pressure to move - voltage when no charge is moving between 2 terminals
Makes ?G more negative thus more spontaneous

3. The bigger the cross - section of a resistor..
Energy of electrons
E=???=hc/?
More flow less resistance
Fluid resistance to flow

4. v2/2
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
F=nv/2L
Mass
Approx .7

5. material with very high resistance
Conduction
Insulator
Fusion
Solid to gas

6. work as it relates to constant force
P=i^2R=V^2/R=IV
Difference between the mass of nucleus and the sum of nucleons
F=mv^2/r
W=Fdcos?

7. when unlike charges move away from each other - U of the system
Charge/length
F=mv^2/r
Increases
E=1/2k(A^2)

8. As current flows through a resistor
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Charge remains constant
F/A
Derive universal gravitation equation

9. power is defined as
Protons+neutrons
Rate of doing work
Converted to extra kinetic energy of the emitted electron
E=neE n is excess charge

10. centripetal acceleration
Mass
Proton or neutron
A=v^2/r
Nsin?incident=nsin?refraction

11. calculate lens power
Centrioles
Q=mc?t
P=1/f
A=v^2/r

12. Newtons 3rd law of motion
?=2L/n
F=- F
Resistor
None

13. boiling point of H2O in K and C
Higher temperature increases resistance
373K 100
700nm -400nm
N is proportional to 1/?

14. max frequency of X- ray depends ONLY on...
Decrease in pressure that fluid exerts on the walls of the container
Energy of electrons
Substance is more dense then water
2pr

15. visible light wavelength
Charge remains constant
700nm -400nm
F=Gm1m2/r^2
P=i^2r

16. parabolic mirror: object between c and f - image is...
Approx .7
Bigger and beyond original object
Yield strength
E=???=hc/?

17. focal for spherical mirrors
3
F=qvBetasin?
Y=(F/A)/(?L/L) stress over strain
F=1/2(r)

18. formula for heat gained or lost during phase change
Frequency
Holds whenever we have a change in energy ?E=?KE+?PE=0
F=- F
Q=mL

19. what would a specific gravity of 1 indicate
B=(F/A)/(?V/V)
100% of the object will be submerged but will not sink
2pvL/g
Energy required to free electron from given metal

20. plane mirrors create What type of image
Solute whose solution is conductive
U=1/2QV=1/2CV^2=1/2Q^2/C
Virtual
Dispersion

21. fission
1/2mv^2
Splitting of atomic nuclei
Sin=0 cos=-1
C=e(A/d)

22. electrolyte
Solute whose solution is conductive
Fk=
1000 kg/m^3 or 1 g/cm^3
Converted to extra kinetic energy of the emitted electron

23. velocity for a wave
Current*voltage
E=Pt
(mass defect)(speed of light)^2
V=???

24. sound waves are what kind of waves
When ?=90 b/c sin90=1
Angle of incidence=angle of reflection
Fusion
Longitudinal

25. When does turbulence in a fluid arise
Spring constant
F=E*A
Vrms=Vmax/v2
When velocity of the fluid exceeds critical velocity

26. type of heat transfer involving transfer of energy by electromagnetic waves
Solute whose solution is conductive
Irms=Imax/v2
V=IR
Radiation

27. light bends toward normal when
N2>n1
Virtual upright
W=qv
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

28. type of image ALWAYS created by diverging (convex) mirror
Substance is less dense then water
I=P/A
V=ED
Virtual upright smaller

29. Bernoulli's equation
Virtual
E=???=hc/?
??=nv/4L
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

30. calculate binding energy
F=qvBetasin?
Diopters
Solute whose solution is conductive
(mass defect)(speed of light)^2

31. period of pendulum
F=- F
2pvL/g
F=I(L*B)
Emf is negative

32. What is an electron volt (eV)
Energy required to free electron from given metal
Image is always upright virtual and smaller
Energy gained by particle with charge of e when moved through one volt
Frequency

33. period of spring
Energy required to free electron from given metal
Light emitted due to heat
???
2pvm/k

34. torque formula
T=rFsin?
F=mv^2/r
Ampere (1C/s)
Number of protons in nucleus

35. a in isotopic notation
?V=BetaV?T
Hydrostatics
Mass number
E=???=hc/?

36. gauge pressure in relation to the others
Is equal to gravitational force
Increases
Negative
Difference between the absolute and atm pressure Pg=P- Patm

37. power (in general)
Incident ray
Work/time
Angle of incidence=angle of reflection
Increases

38. speed of light in a vacuum (c) =
Wave speed
???
Virtual
Surface

39. location of minima in diffraction pattern
Surface
20 Hz to 20 -000 Hz
A sin?=n?
P=IV

40. torque is given by
Light travels from high n to lower n with an angle of incidence greater than the critical angle
T=rF where F is proportional to mass and r is distance from pivot
Vo^2+2a(?x)
U=q?v

41. polarized light
Real image
Electric fields of all the light waves are oriented in the same direction
W'=?E=?KE+?U
Spreading out of light as it passes through a narrow opening

42. work as product of pressure and volume change
Resistor
I=?q/?t
F1/A1=F2/A2
M1v1=m2v2

43. vertical velocity of projectile
Vsin?
Number of protons in nucleus
The shortest wavelength
Equilibrium position

44. force experience by stationary particle in magnetic field
C=Q/V
image/object
Increases
None

45. magnetic field of solenoid
3
N1>n2
A=v^2/r
B=

46. relate focal length and radius of curvature(r)
F=r/2
F=qvBetasin?
Longitudinal
Proton or neutron

47. relate velocities and displacement 2 ways
F=q/e0
Spring constant
V^2=vo^2+2a?x ?x=1/2(vo+v)t
E=V/d

48. for object in SHM E=
Real inverted
K+U=constant
E=1/2k(A^2)
Sin=v3/2 cos=1/2

49. (+) magnification signifies
Upright image
Mass number
C=Q/V
It is halved

50. units for newtons
Sin=0 cos=-1
W=qv
Gamma decay
Kg*m/s^2

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MCAT Physics Formulas

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