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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. formula for heat gained or lost during phase change
As speed of fluid increases pressure and potential energy decrease
E=1/2k(A^2)
Q=mL
Solid to gas

2. units for newtons
Mass number
E=neE n is excess charge
Kg*m/s^2
F=qvBetasin?

3. atomic mass number represents
V/??
Protons+neutrons
N1>n2
V=IR

4. unit of current
Ampere (1C/s)
V=???
?=vk/m=2p??
F=nv/2L

5. Find electric potential given electric field
Pressure to move - voltage when no charge is moving between 2 terminals
Virtual upright
Charge remains constant
E*r

6. electric field of parallel plate capacitor
Equilibrium position
E=V/d
Fnet=0 thus Fg=Fs mg=kx
Sin=1 cos=0

7. units for power of a lens
Vsin?
Diopters
Wave speed
F=qvBetasin?

8. image created when converging (concave) mirror when object is placed beyond focal point
W=qv
Real inverted image
I=?q/?t
Upright image

9. Hooke's Law
Will never decrease capacitance
P=1/f
F=- kx
Low voltage to high voltage

10. Gauss's Law
Counterclockwise is + clockwise is -
Neutron is converted into a proton and an electron is emitted
Mass number
F=q/e0

11. 90
Upright image
Sin=1 cos=0
V=ED
Counterclockwise is + clockwise is -

12. (+) magnification signifies
E=V/d
Beta=
Virtual upright
Upright image

13. for photoelectric material to liberate an electron
Photon energy must be greater than work function of the material
Real inverted
E=kQ/r^2
F=nv/2L

14. snells law
F=q/e0
Nsin?incident=nsin?refraction
A Calorie is a nutritional term equal to 1000 calories
P=i^2r

15. planet orbiting a star - centripetal force
M1v1=m2v2
Is equal to gravitational force
Vot+1/2at^2=(V0+v/2)t
U=(1/2)kx^2

16. period (T) and frequency (f) of a tone are related by
M1v1=m2v2
T=1/f
None
Difference between the mass of nucleus and the sum of nucleons

17. magnification=
No net force acting on it
Sin=v2/2 cos=v2/2
image/object
Mass

18. small moduli value
Centrioles
F=mv^2/r
More malleable material
Vrms=Vmax/v2

19. freezing point of H2O in K and C
273K 0
Fluid resistance to flow
?L=aL?T
Bigger and beyond original object

20. Newtons 3rd law of motion
Real image
Weighted average of the masses of the element
?=m/v kg/m^3 g/ml g/cm^3
F=- F

21. mirror image is on same side as object
Surface
Real image
W=qv
P=1/f

22. ? of sound wave=
Pascal (Pa) N/m^2
V/??
Sin=1/2 cos=v3/2
E*r

23. absolute zero in K and C
Higher temperature increases resistance
??=nv/4L
0K -273
As speed of fluid increases pressure and potential energy decrease

24. period of pendulum
20 Hz to 20 -000 Hz
???
??=nv/4L
2pvL/g

25. sound waves are what kind of waves
Sin=0 cos=1
Longitudinal
Internal resistance is zero voltage=emf
J=Force*Time=mv - mvo=?p

26. solves for power lost during transmission (one way)
Incident ray
P=i^2r
V=kQ/r
Sin=0 cos=1

27. units for power
Yield strength
WATTS
Bigger and beyond original object
Is equal to gravitational force

28. capacitance of simple parallel plate (not according to Ohms)
I=?q/?t
C=e(A/d)
Slower light will travel
2pr

29. increasing emf has What effect on ?G
Negative
?=2L/n
700nm -400nm
Makes ?G more negative thus more spontaneous

30. process of combing smaller nuclei to create larger nuclei
Conduction
?x=1/2(v+vo)t
When in parallel
Fusion

31. What is heat of fusion
Photon energy must be greater than work function of the material
Amount of energy required for phase change from solid to liquid
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
F1/A1=F2/A2

32. velocity for a wave
Increases
Angle of incidence=angle of reflection
V=???
Higher temperature increases resistance

33. formula for impulse (J)
Spreading out of light as it passes through a narrow opening
Insulator
J=Force*Time=mv - mvo=?p
Cohesion

34. a virtual image has what kind of image distance
EV
N1>n2
Negative
Charge/length

35. lever arm is halved what happens to torque
It is halved
Will never decrease capacitance
Force and acceleration
image/object

36. When is torque maximum
Q=mc?t
When ?=90 b/c sin90=1
Converted to extra kinetic energy of the emitted electron
Force a molecule of liquid feels toward molecules of some other substance

37. relate velocities and displacement 2 ways
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Increase length increase resistance
When velocity of the fluid exceeds critical velocity
None

38. horizontal velocity of projectile
Vcos?
Beta=
Neutron is converted into a proton and an electron is emitted
A=v^2/r

39. Log(100)=
Radiation
Force a molecule of liquid feels toward the other molecules of the liquid
2
F=- F

40. boiling point of H2O in K and C
Constant for closed system independent of changes in area
373K 100
Rate of doing work
Amount of energy required for phase change from solid to liquid

41. visible light wavelength
Sin=v2/2 cos=v2/2
273K 0
700nm -400nm
Resistor

42. reflection law
C=Q/V
?x=1/2(v+vo)t
Mass number
Angle of incidence=angle of reflection

43. work as product of pressure and volume change
B=
F1/A1=F2/A2
F=E*A
E=???=hc/?

44. energy stored in capacitor
Conduction
Ampere (1C/s)
U=1/2QV=1/2CV^2=1/2Q^2/C
F=I(L*B)

45. open pipe wavelength
Fnet=0 thus Fg=Fs mg=kx
?=2L/n
None
No net force acting on it

46. meaning of Bernouili's equation
F=- F
The liquid itself not the object
Frequency
As speed of fluid increases pressure and potential energy decrease

47. find factor by which something has been changed
New/old
F=I(L*B)
Buoyant force equals blocks weight
Pascal (Pa) N/m^2

48. Capacitors in series
Image is always upright virtual and smaller
20 Hz to 20 -000 Hz
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
Real inverted

49. momentum
Increases
Buoyant force equals blocks weight
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
P=m?v

50. work function
It is halved
2 times the focal distance
Virtual upright
Energy required to free electron from given metal