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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. SI unit for pressure
2 times the focal distance
Pascal (Pa) N/m^2
E=kQ/r^2
Body in motion remains in motion unless net force acts upon it

2. large moduli value
Protons+neutrons
V=kQ/r
Gas to solid
More rigid material

3. across capacitor what remains constant
Voltage
B=
F=I(L*B)
?x=1/2(v+vo)t

4. for object in SHM E=
K+U=constant
Substance is more dense then water
Amount of energy required for phase change from solid to liquid
(mass defect)(speed of light)^2

5. a lightbulb in a circuit is a
?L=aL?T
Q=mc?t
Photon energy must be greater than work function of the material
Resistor

6. magnetic field of solenoid
Fnet=0 thus Fg=Fs mg=kx
N*s/m^2
More malleable material
B=

7. snell's law derivative
N is proportional to 1/?
F=c/?
Virtual
Intensity

8. excess energy of a photon is...
Frequency
Converted to extra kinetic energy of the emitted electron
Increases
Irms=Imax/v2

9. magnetic field is created by loop wire - What is magnetic field at center of loop
?V=BetaV?T
Beta=
Resistor
Work/time

10. z in isotopic notation
Number of protons
Vcos?
Q=mL
More malleable material

11. potential energy of spring
It is halved
Protons+neutrons
U=(1/2)kx^2
Proton or neutron

12. photoelectric effect
700nm -400nm
F=qvBetasin?
Rate of doing work
Incident light is used to free electrons from a metal

13. find energy in circuit
E=Pt
F=xk=mg
Bigger and beyond original object
Is equal to gravitational force

14. audible wave frequency
Force a molecule of liquid feels toward the other molecules of the liquid
20 Hz to 20 -000 Hz
Sin=1/2 cos=v3/2
Voltage

15. density of water
When ?=90 b/c sin90=1
1000 kg/m^3 or 1 g/cm^3
J=Force*Time=mv - mvo=?p
Insulator

16. total energy of spring system
E=V/d
E=1/2k(A^2)
W=qv
Amount of energy required for phase change from solid to liquid

17. under constant acceleration - v=
Fnet=0 thus Fg=Fs mg=kx
Virtual
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Vo+at

18. convex mirror
0K -273
Image is always upright virtual and smaller
Mass number
More rigid material

19. Gauss's Law
A sin?=n?
F=q/e0
B=(F/A)/(?V/V)
?=4L/n

20. What does atoms atomic weight represent
F=E*A
Bigger and beyond original object
Weighted average of the masses of the element
Sin=1/2 cos=v3/2

21. Hooke's Law
F/A
Difference between the absolute and atm pressure Pg=P- Patm
Mass
F=- kx

22. open pipe frequency
1/f=1/o+ 1/i
Energy gained by particle with charge of e when moved through one volt
Current*voltage
F=nv/2L

23. current of AC
F=ma
Irms=Imax/v2
Virtual upright
Force a molecule of liquid feels toward molecules of some other substance

24. snells law
When in parallel
F=r/2
Nsin?incident=nsin?refraction
4 Hz

25. frequency of spring is proportional to...
Pressure to move - voltage when no charge is moving between 2 terminals
Spring constant
Vsin?
Emf is positive

26. speed of light in a vacuum (c) =
100% of the object will be submerged but will not sink
Side opposite From which light originates
???
Charge/area

27. units for power
Sin=1 cos=0
Energy required to free electron from given metal
WATTS
W=qv

28. Find electric potential given electric field
The shortest wavelength
Charge remains constant
Cohesion
E*r

29. electric potential energy
U=QV
Radiation
Solid to gas
Image is always upright virtual and smaller

30. negative charge moves spontaneously from
Low voltage to high voltage
V^2=vo^2+2a?x ?x=1/2(vo+v)t
F/A
3a=Beta

31. power dissipated by resistor (3 ways)
Q=mc?t
Sin=1/2 cos=v3/2
P=i^2R=V^2/R=IV
Ceq=C1+C2+C3 Veq=V1=V2=V3

32. under what conditions will light undergo total internal reflection
Solid to gas
U=QV
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Upright image

33. nucleon
Proton or neutron
V=kq/r
Mass number
EV

34. 30
E=Pt
Sin=1/2 cos=v3/2
P=IA
E=???=hc/?

35. when spring is at rest
Constant for closed system independent of changes in area
Hydrostatics
Fnet=0 thus Fg=Fs mg=kx
Yield strength

36. light bends toward normal when
Work/time
MRT
Ampere (1C/s)
N2>n1

37. buoyant force is due to...
F=mv^2/r
None
X=(initial horizontal v)(time in air)
The liquid itself not the object

38. electric field equation
Increases
F=- F
E=kQ/r^2
F=ma

39. work in electromagnetic field
Virtual
Energy gained by particle with charge of e when moved through one volt
WATTS
W=qv

40. v2/2
Emf is positive
Approx .7
Decrease in pressure that fluid exerts on the walls of the container
Dispersion

41. capacitance of simple parallel plate (not according to Ohms)
Degree=p/180 radian
C=e(A/d)
F=qvBetasin?
Nsin?incident=nsin?refraction

42. solves for power lost during transmission (one way)
N1>n2
Nsin?incident=nsin?refraction
2pvL/g
P=i^2r

43. Capacitors in series
Weighted average of the masses of the element
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
Dispersion
(Vo+v)/2

44. power of sound wave
Incident light is used to free electrons from a metal
Fnet=0 thus Fg=Fs mg=kx
P=IA
Splitting of atomic nuclei

45. unit for energy beside J
Radiation
X=(initial horizontal v)(time in air)
EV
Vbulk modulus

46. ideal ammeter
Force and acceleration
?=4L/n
Zero resistance
?V=BetaV?T

47. power (in general)
Hydrostatics
E=Pt
Work/time
4 Hz

48. focal length
0K -273
20 Hz to 20 -000 Hz
1/f=1/o+ 1/i
V=ED

49. Newtons 3rd law of motion
F=- F
F=qvBetasin?
Perpendicular to each other
Resistor

50. a virtual image has what kind of image distance
Beta=
Negative
Beta=10Log(I/Io)
Incident ray