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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. wavelength in string
Radiation
Proton or neutron
?=2L/n
Diopters

2. units for power of a lens
Will never decrease capacitance
Beta=
It jumps to higher energy level
Diopters

3. period (T) and frequency (f) of a tone are related by
P=i^2r
Frequency
Incident light is used to free electrons from a metal
T=1/f

4. only radioactive decay that conserves the nucleus charge
Increase length increase resistance
Points away from + and toward -
20 Hz to 20 -000 Hz
Gamma decay

5. 180
Real image
Sin=0 cos=-1
E=Pt
Radiation

6. find power in circuit
Ampere (1C/s)
Q=mc?t
Current*voltage
Points away from + and toward -

7. parabolic mirror: object between c and f - image is...
Bigger and beyond original object
V/??
V=kq/r
W'=?E=?KE+?U

8. Gauss's Law
Virtual
Sin=1/2 cos=v3/2
F=q/e0
100% of the object will be submerged but will not sink

9. speed of the spring
Req=R1+R2+R3 Veq=V1+V2+V3
V=?A
EV
Increases

10. electric field of parallel plate capacitor
E=V/d
Beta=10Log(I/Io)
F=nv/2L
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

11. What does atoms atomic weight represent
Convection
Y=(F/A)/(?L/L) stress over strain
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Weighted average of the masses of the element

12. find factor by which something has been changed
Real inverted
Beta=
New/old
Vsin?

13. kirchhoff's rule -- travel from positive to negative
P=i^2R=V^2/R=IV
Emf is negative
Vo^2+2a(?x)
Rate of doing work

14. focal for spherical mirrors
2pr
F=mv^2/r
Farad 1 F= 1 c/v
F=1/2(r)

15. mirror image is on same side as object
V=IR
Real inverted image
EV
Real image

16. SI unit for pressure
Coulomb=amphere*sec
Pascal (Pa) N/m^2
20 Hz to 20 -000 Hz
Farad 1 F= 1 c/v

17. temperature and resistors
Converted to extra kinetic energy of the emitted electron
???
Higher temperature increases resistance
Work/time

18. frequency of spring is proportional to...
Current*voltage
??=nv/4L
Spring constant
373K 100

19. units for newtons
Weighted average of the masses of the element
Kg*m/s^2
?=2L/n
V=IR

20. unit for energy beside J
More flow less resistance
EV
F/A
E=V/d

21. study of fluids at rest
Resistor
Hydrostatics
Pressure to move - voltage when no charge is moving between 2 terminals
The shortest wavelength

22. charge of gamma particles
?=4L/n
Conductor
Sin=v3/2 cos=1/2
None

23. Bernoulli's equation
Real inverted image
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
B=
?=m/v kg/m^3 g/ml g/cm^3

24. for photoelectric material to liberate an electron
F=mv^2/r
P=IV
Degree=p/180 radian
Photon energy must be greater than work function of the material

25. image created when converging (concave) mirror when object is placed beyond focal point
Solute whose solution is conductive
Real inverted image
E=neE n is excess charge
100% of the object will be submerged but will not sink

26. under content acceleration v^2=
Kg*m/s^2
Ceq=C1+C2+C3 Veq=V1=V2=V3
Vo^2+2a(?x)
F=nv/2L

27. formula for heat gained or lost during phase change
V=?A
I=P/A
N is proportional to 1/?
Q=mL

28. Log(1000)=
C=eoKA/D
N1>n2
3
New/old

29. process of combing smaller nuclei to create larger nuclei
Fusion
When ?=90 b/c sin90=1
Angle of incidence=angle of reflection
100% of the object will be submerged but will not sink

30. when spring is at rest
Sin=v3/2 cos=1/2
Fnet=0 thus Fg=Fs mg=kx
2pvm/k
Spreading out of light as it passes through a narrow opening

31. circumference of a circle
Sin=1 cos=0
No image is formed
2pr
Charge/area

32. magnetic field force on current carrying wire
Q=mc?t
F=I(L*B)
Resistor
Charge remains constant

33. stays constant when light travels through boundary
V/??
Voltage
0K -273
Frequency

34. find voltage (original)
Hydrostatics
Proton or neutron
V=kq/r
T=rFsin?

35. density with units
T=rF where F is proportional to mass and r is distance from pivot
Mass
?=m/v kg/m^3 g/ml g/cm^3
Points away from + and toward -

36. (-) magnification signifies
Will never decrease capacitance
Body in motion remains in motion unless net force acts upon it
Inverted image
T=rF where F is proportional to mass and r is distance from pivot

37. momentum
Frequency
P=m?v
Frequency
N*s/m^2

38. when an electron absorbs a photon
Buoyant force equals blocks weight
Increase length increase resistance
It jumps to higher energy level
When ?=90 b/c sin90=1

39. s
2
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Sin=1/2 cos=v3/2
Charge/area

40. angular frequency of spring ?
?=vk/m=2p??
image/object
2pr
Charge/length

41. The bigger the cross - section of a resistor..
Makes ?G more negative thus more spontaneous
More flow less resistance
F=I(L*B)
Nsin?incident=nsin?refraction

42. closed pipe wavelength
Force and acceleration
Real image
Cohesion
?=4L/n

43. increase in velocity of a fluid is associated with
None
Frequency
Q=mc?t
Decrease in pressure that fluid exerts on the walls of the container

44. potential energy of spring
U=(1/2)kx^2
Y=(F/A)/(?L/L) stress over strain
U=QV
P=i^2r

45. energy of moving proton
Holds whenever we have a change in energy ?E=?KE+?PE=0
1/2mv^2
Real inverted
B=

46. under constant acceleration - v=
Vo+at
V=???
I=P/A
Vo^2+2a(?x)

47. electric work
?V=BetaV?T
Longitudinal
U=q?v
Vbulk modulus

48. Newtons 1st law of motion
It is halved
Rate of doing work
Body in motion remains in motion unless net force acts upon it
U=QV

49. torque formula
When ?=90 b/c sin90=1
C=eoKA/D
T=rFsin?
4 Hz

50. buoyant force is due to...
B=(F/A)/(?V/V)
Constant for closed system independent of changes in area
Cohesion
The liquid itself not the object