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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. speed of the spring
C=e(A/d)
Vbulk modulus
V=?A
F=I(L*B)

2. frequency in string
T=rF where F is proportional to mass and r is distance from pivot
C=e(A/d)
Conductor
F=nv/2L

3. As current flows through a resistor
Coulomb=amphere*sec
Difference between the mass of nucleus and the sum of nucleons
Charge remains constant
C=eoKA/D

4. electromotive force
P=i^2R=V^2/R=IV
Pressure to move - voltage when no charge is moving between 2 terminals
U=QV
Conduction

5. under what conditions will light undergo total internal reflection
Higher temperature increases resistance
Light travels from high n to lower n with an angle of incidence greater than the critical angle
F=r/2
No image is formed

6. work as product of pressure and volume change
Virtual upright smaller
Constant for closed system independent of changes in area
4 Hz
F1/A1=F2/A2

7. units for power
Dispersion
WATTS
Beta=
?x=1/2(v+vo)t

8. index of refraction (n) equation
X=(initial horizontal v)(time in air)
N=c/v
C=eoKA/D
Proton or neutron

9. magnetic field force on current carrying wire
P=i^2R=V^2/R=IV
F=I(L*B)
P=IA
Zero resistance

10. a virtual image has what kind of image distance
Negative
Diopters
Force a molecule of liquid feels toward the other molecules of the liquid
N1>n2

11. work function
Conductor
A Calorie is a nutritional term equal to 1000 calories
E=neE n is excess charge
Energy required to free electron from given metal

12. power (in general)
Real inverted image
Converted to extra kinetic energy of the emitted electron
Work/time
Higher temperature increases resistance

13. ?
V=IR
Dispersion
Solid to gas
Charge/length

14. units for capacitance
V=ED
?x=1/2(v+vo)t
3a=Beta
Farad 1 F= 1 c/v

15. (-) magnification signifies
Force applied parallel to objects surface
Sin=1/2 cos=v3/2
Current*voltage
Inverted image

16. magnetic field is created by loop wire - What is magnetic field at center of loop
Vsin?
Beta=
Mass
Energy of electrons

17. when an electron absorbs a photon
Charge/length
Is equal to gravitational force
Force and acceleration
It jumps to higher energy level

18. work in electromagnetic field
W=qv
Real inverted
Increase length increase resistance
Insulator

19. energy of moving proton
1/2mv^2
Farad 1 F= 1 c/v
(1/2)?v^2
P=i^2R=V^2/R=IV

20. freezing point of H2O in K and C
273K 0
Insulator
Virtual
Constant for closed system independent of changes in area

21. small moduli value
image/object
More malleable material
3
Number of protons

22. 60
Sin=v3/2 cos=1/2
P=i^2R=V^2/R=IV
Equilibrium position
Beta=

23. equation for static friction
Vcos?
Fs=
Convection
Substance is less dense then water

24. calculate lens power
Emf is positive
P=IV
P=1/f
???

25. sound waves are what kind of waves
Weighted average of the masses of the element
Longitudinal
Bigger and beyond original object
Ampere (1C/s)

26. light ray that strikes a surface
Sin=0 cos=1
It jumps to higher energy level
A=v^2/r
Incident ray

27. light bends toward normal when
N2>n1
It is halved
Increases
F=nv/2L

28. energy of a photon is dependent on...
Frequency
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Wave speed
?=2L/n

29. pressure
Nsin?incident=nsin?refraction
?x=1/2(v+vo)t
P=i^2R=V^2/R=IV
F/A

30. centripetal acceleration
Degree=p/180 radian
Low voltage to high voltage
None
A=v^2/r

31. charge on the plates of a capacitor
?=2L/n
Force a molecule of liquid feels toward molecules of some other substance
Q=CV
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)

32. intensity of sound
Sin=0 cos=-1
None
?=4L/n
I=P/A

33. circumference of a circle
2pr
T=rF where F is proportional to mass and r is distance from pivot
T=rFsin?
Fusion

34. determine spring constant
Number of protons in nucleus
Req=R1+R2+R3 Veq=V1+V2+V3
F=xk=mg
Holds whenever we have a change in energy ?E=?KE+?PE=0

35. find power in circuit
J=Force*Time=mv - mvo=?p
20 Hz to 20 -000 Hz
Current*voltage
Coulomb=amphere*sec

36. kirchhoff's rule -- travel from positive to negative
Emf is negative
Negative
Work/time
E=kQ/r^2

37. sublimation
?=vk/m=2p??
Solid to gas
Wave speed
Substance is more dense then water

38. Ohm's Law
E=Pt
E*r
V=IR
N2>n1

39. What is heat of fusion
Moving charge
U=(1/2)kx^2
Solute whose solution is conductive
Amount of energy required for phase change from solid to liquid

40. magnitude of current
I=?q/?t
V=???
Sin=0 cos=-1
Fnet=0 thus Fg=Fs mg=kx

41. Hooke's Law
Coulomb=amphere*sec
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Force and acceleration
F=- kx

42. (+) magnification signifies
Minimum frequency of light that will cause emission of an electron
Upright image
Fk=
P=m?v

43. type of heat transfer involving direct transfer of energy from molecule to molecule through molecular collisions
Slower light will travel
Conduction
F=xk=mg
F=c/?

44. audible wave frequency
Pascal (Pa) N/m^2
Side opposite From which light originates
20 Hz to 20 -000 Hz
B=(F/A)/(?V/V)

45. find factor by which something has been changed
Negative
B=(F/A)/(?V/V)
New/old
Derive universal gravitation equation

46. polarized light
2pvm/k
Y=(F/A)/(?L/L) stress over strain
Electric fields of all the light waves are oriented in the same direction
V=?A

47. 0
3
Virtual upright smaller
Approx .7
Sin=0 cos=1

48. boiling point of H2O in K and C
Difference between the absolute and atm pressure Pg=P- Patm
Y=(F/A)/(?L/L) stress over strain
373K 100
P=IA

49. density of water
???
1000 kg/m^3 or 1 g/cm^3
?=4L/n
Angle of incidence=angle of reflection

50. wavelength in string
F=q/e0
Equilibrium position
?=2L/n
?L=aL?T