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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. What does atoms atomic weight represent
Spreading out of light as it passes through a narrow opening
N=c/v
None
Weighted average of the masses of the element

2. work function
Vot+1/2at^2=(V0+v/2)t
Energy required to free electron from given metal
V=IR
Upright image

3. length of resistor
Increase length increase resistance
It is halved
Q=mL
700nm -400nm

4. 'real' side of a lens
V=?A
Emf is positive
Side opposite From which light originates
Ceq=C1+C2+C3 Veq=V1=V2=V3

5. equation for capacitance with dielectric
Surface
Req=R1+R2+R3 Veq=V1+V2+V3
C=eoKA/D
Vbulk modulus

6. material with low resistance
U=1/2QV=1/2CV^2=1/2Q^2/C
F=nv/2L
Current*voltage
Conductor

7. volume thermal expansion of a solid
?V=BetaV?T
F=r/2
Farad 1 F= 1 c/v
N2>n1

8. work in electromagnetic field
W=qv
W'=?E=?KE+?U
New/old
(Vo+v)/2

9. capacitors in parallel
M1v1=m2v2
It is halved
Ceq=C1+C2+C3 Veq=V1=V2=V3
Virtual upright

10. 30
E*r
V=kq/r
Sin=1/2 cos=v3/2
W'=?E=?KE+?U

11. for photoelectric material to liberate an electron
Photon energy must be greater than work function of the material
P=IA
Body in motion remains in motion unless net force acts upon it
Derive universal gravitation equation

12. absolute zero in K and C
Minimum frequency of light that will cause emission of an electron
F=1/2(r)
0K -273
Conduction

13. 90
Virtual upright
Insulator
Sin=1 cos=0
E=???=hc/?

14. conservation of energy law
Holds whenever we have a change in energy ?E=?KE+?PE=0
???
700nm -400nm
2pr

15. Bernoulli's equation
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Pressure to move - voltage when no charge is moving between 2 terminals
F=q/e0
F=xk=mg

16. parabolic mirror: object between c and f - image is...
Bigger and beyond original object
V=kq/r
Force applied parallel to objects surface
F=1/2(r)

17. magnitude of magnetic field for current carrying wire
Degree=p/180 radian
Beta=
Inverted image
P=i^2R=V^2/R=IV

18. 60
Real inverted
Difference between the absolute and atm pressure Pg=P- Patm
Voltage
Sin=v3/2 cos=1/2

19. adhesion
B=
Yield strength
Force a molecule of liquid feels toward molecules of some other substance
Sin=1/2 cos=v3/2

20. 0
Sin=0 cos=1
Decrease in pressure that fluid exerts on the walls of the container
Vo^2+2a(?x)
1000 kg/m^3 or 1 g/cm^3

21. parabolic mirror: object in front of focal point
Virtual upright
Vbulk modulus
Work/time
F=qvBetasin?

22. viscosity
Solid to gas
The liquid itself not the object
Fluid resistance to flow
Sin=1 cos=0

23. closed pipe frequency
Ampere (1C/s)
F=1/2(r)
Bigger and beyond original object
??=nv/4L

24. deposition
Convection
New/old
700nm -400nm
Gas to solid

25. degrees to radians
As speed of fluid increases pressure and potential energy decrease
Degree=p/180 radian
Moving charge
Energy required to free electron from given metal

26. cohesion
Force a molecule of liquid feels toward the other molecules of the liquid
E=V/d
F=qvBetasin?
1000 kg/m^3 or 1 g/cm^3

27. reflection law
1/2mv^2
Weighted average of the masses of the element
Emf is negative
Angle of incidence=angle of reflection

28. speed of sound in proportional to...
None
Fluid resistance to flow
Vbulk modulus
Image is always upright virtual and smaller

29. parabolic mirror: image at focal point
Virtual
No image is formed
Number of protons
F=I(L*B)

30. polarized light
V=kq/r
Moving charge
Emf is positive
Electric fields of all the light waves are oriented in the same direction

31. When is torque maximum
Nsin?incident=nsin?refraction
Inverted image
When ?=90 b/c sin90=1
Incident light is used to free electrons from a metal

32. units for power
B=(F/A)/(?V/V)
Charge/length
?=4L/n
WATTS

33. (+) magnification signifies
Side opposite From which light originates
Upright image
Vsin?
2pr

34. dynamic pressure
F=I(L*B)
(1/2)?v^2
Gamma decay
The shortest wavelength

35. under what conditions will light undergo total internal reflection
Real inverted
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Sin=0 cos=-1
T=rFsin?

36. a virtual image has what kind of image distance
Negative
Weighted average of the masses of the element
Solid to gas
Number of protons in nucleus

37. momentum
Voltage
P=m?v
Moving charge
F=r/2

38. units for power of a lens
Diopters
Slower light will travel
Equilibrium position
U=QV

39. when an electron absorbs a photon
It jumps to higher energy level
Energy required to free electron from given metal
T=rFsin?
V^2=vo^2+2a?x ?x=1/2(vo+v)t

40. angular frequency of spring ?
Buoyant force equals blocks weight
(mass defect)(speed of light)^2
Resistor
?=vk/m=2p??

41. surface tension results from
Cohesion
U=q?v
Makes ?G more negative thus more spontaneous
Light travels from high n to lower n with an angle of incidence greater than the critical angle

42. electric field equation
Constant for closed system independent of changes in area
20 Hz to 20 -000 Hz
2pvL/g
E=kQ/r^2

43. density with units
Yield strength
4 Hz
N*s/m^2
?=m/v kg/m^3 g/ml g/cm^3

44. Newtons 1st law of motion
C=e(A/d)
Body in motion remains in motion unless net force acts upon it
None
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

45. power dissipated by resistor (3 ways)
Ampere (1C/s)
P=i^2R=V^2/R=IV
P=i^2r
J=Force*Time=mv - mvo=?p

46. focal for spherical mirrors
Electric fields of all the light waves are oriented in the same direction
F=1/2(r)
1000 kg/m^3 or 1 g/cm^3
P=IV

47. small moduli value
M1v1=m2v2
Beta=10Log(I/Io)
More malleable material
F/A

48. type of heat transfer involving the physical motion of heated material
Convection
N2>n1
The liquid itself not the object
New/old

49. total horizontal distance traveled by projectile
X=(initial horizontal v)(time in air)
2pr
?=m/v kg/m^3 g/ml g/cm^3
Buoyant force equals blocks weight

50. amplitude of spring is proportional to...
K+U=constant
Makes ?G more negative thus more spontaneous
Force and acceleration
W'=?E=?KE+?U