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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. electromotive force
Pressure to move - voltage when no charge is moving between 2 terminals
Is equal to gravitational force
???
2pvm/k

2. What is an electron volt (eV)
Energy gained by particle with charge of e when moved through one volt
F=Gm1m2/r^2
T=rF where F is proportional to mass and r is distance from pivot
???

3. relationship between linear thermal expansion and volumetric thermal expansion
Charge remains constant
P=m?v
3a=Beta
Mass number

4. formula for solution which is diluted related to initial concentration
Proton or neutron
M1v1=m2v2
E=V/d
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

5. what creates a magnetic field
P=IA
Moving charge
R=pL/A
Ceq=C1+C2+C3 Veq=V1=V2=V3

6. suppose a block is floating in H2O - What does this mean
Buoyant force equals blocks weight
Splitting of atomic nuclei
B=(F/A)/(?V/V)
Constant for closed system independent of changes in area

7. 30
Buoyant force equals blocks weight
W=Fdcos?
It is halved
Sin=1/2 cos=v3/2

8. ? of sound wave=
Sin=0 cos=-1
E=Pt
?=vk/m=2p??
V/??

9. threshold frequency (photoelectric effect)
N*s/m^2
Force applied parallel to objects surface
Minimum frequency of light that will cause emission of an electron
Fusion

10. temperature and resistors
Higher temperature increases resistance
F=qvBetasin?
W=qv
F=q/e0

11. weight
C=e(A/d)
700nm -400nm
W=mg=?Vg
Resistor

12. location of minima in diffraction pattern
Slower light will travel
It jumps to higher energy level
A sin?=n?
Coulomb=amphere*sec

13. work as it relates to constant force
W=Fdcos?
Fusion
V=kQ/r
Emf is negative

14. larger the index of refraction..
When in parallel
Slower light will travel
F=I(L*B)
Increase length increase resistance

15. buoyant force is due to...
The liquid itself not the object
Pascal (Pa) N/m^2
Dispersion
U=1/2QV=1/2CV^2=1/2Q^2/C

16. audible wave frequency
20 Hz to 20 -000 Hz
(Vo+v)/2
Longitudinal
V=ED

17. length of resistor
Insulator
Vo^2+2a(?x)
V=ED
Increase length increase resistance

18. Gauss's Law
WATTS
F=q/e0
Makes ?G more negative thus more spontaneous
N1>n2

19. in calculating torque - which direction is + and which is
Counterclockwise is + clockwise is -
Force a molecule of liquid feels toward the other molecules of the liquid
3
Neutron is converted into a proton and an electron is emitted

20. increasing emf has What effect on ?G
Makes ?G more negative thus more spontaneous
B=(F/A)/(?V/V)
Substance is more dense then water
0K -273

21. dynamic pressure
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
700nm -400nm
(1/2)?v^2
Equilibrium position

22. Formula for centripetal force
F=nv/2L
F=mv^2/r
3a=Beta
V=kQ/r

23. what would a specific gravity of 1 indicate
V=kq/r
Radiation
Real inverted image
100% of the object will be submerged but will not sink

24. work in electromagnetic field
V=ED
W=qv
100% of the object will be submerged but will not sink
K+U=constant

25. degrees to radians
F=nv/2L
Ampere (1C/s)
Degree=p/180 radian
None

26. negative charge moves spontaneously from
I=P/A
Is equal to gravitational force
Real inverted image
Low voltage to high voltage

27. across capacitor what remains constant
No image is formed
Weighted average of the masses of the element
Is equal to gravitational force
Voltage

28. viscosity
Buoyant force equals blocks weight
Coulomb=amphere*sec
Fluid resistance to flow
Solid to gas

29. mass defect
Vot+1/2at^2=(V0+v/2)t
P=IA
Negative
Difference between the mass of nucleus and the sum of nucleons

30. force due to electric field on single charge
U=q?v
20 Hz to 20 -000 Hz
E=neE n is excess charge
F/A

31. work done by non conservative force

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32. units for capacitance
Farad 1 F= 1 c/v
?=2L/n
B=(F/A)/(?V/V)
Body in motion remains in motion unless net force acts upon it

33. z in isotopic notation
Number of protons
???
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Force a molecule of liquid feels toward molecules of some other substance

34. all harmonics have the same
Higher temperature increases resistance
F1/A1=F2/A2
Wave speed
W=qv

35. find power in circuit
Bigger and beyond original object
Current*voltage
???
Force a molecule of liquid feels toward the other molecules of the liquid

36. (-) magnification signifies
F=nv/2L
373K 100
Inverted image
N*s/m^2

37. work function
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
U=1/2QV=1/2CV^2=1/2Q^2/C
Energy required to free electron from given metal
Vcos?

38. max frequency of X- ray depends ONLY on...
Energy of electrons
Rate of doing work
Makes ?G more negative thus more spontaneous
Substance is more dense then water

39. What is displacement equation
?x=1/2(v+vo)t
W=Fdcos?
When in parallel
Q=CV

40. kirchhoff's rule -- travel from positive to negative
M1v1=m2v2
??=nv/4L
B=(F/A)/(?V/V)
Emf is negative

41. As current flows through a resistor
Charge remains constant
Side opposite From which light originates
Q=CV
?=vk/m=2p??

42. type of heat transfer involving the physical motion of heated material
U=(1/2)kx^2
B=
Convection
N=c/v

43. 90
373K 100
Proton or neutron
V=ED
Sin=1 cos=0

44. charge of beta particles
Vot+1/2at^2=(V0+v/2)t
Makes ?G more negative thus more spontaneous
Mass number
Negative

45. polarized light
Approx .7
1000 kg/m^3 or 1 g/cm^3
Electric fields of all the light waves are oriented in the same direction
1/2mv^2

46. wave velocity=
F=ma
???
Force a molecule of liquid feels toward molecules of some other substance
Amount of energy required for phase change from solid to liquid

47. index of refraction (n) equation
Sin=0 cos=-1
N=c/v
Proton or neutron
F=mv^2/r

48. charge of gamma particles
None
Side opposite From which light originates
Resistor
Longitudinal

49. freezing point of H2O in K and C
Slower light will travel
F=ma
273K 0
W'=?E=?KE+?U

50. when spring is at rest
V=IR
Fnet=0 thus Fg=Fs mg=kx
P=i^2r
New/old