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MCAT Physics Formulas

Subjects : mcat, science

Instructions:

Answer 50 questions in 15 minutes.
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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. When is voltage constant across capacitors
P=i^2r
W=mg=?Vg
When in parallel
3

2. to find acceleration due to gravity
0K -273
?=2L/n
Derive universal gravitation equation
?=m/v kg/m^3 g/ml g/cm^3

3. focal length
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
1/f=1/o+ 1/i
700nm -400nm
P=IV

4. units for power of a lens
Conduction
Q=CV
2pr
Diopters

5. -Beta- decay
Mass
Neutron is converted into a proton and an electron is emitted
E=neE n is excess charge
W'=?E=?KE+?U

6. find power in circuit
Current*voltage
N2>n1
B=
Buoyant force equals blocks weight

7. parabolic mirror: object between c and f - image is...
Radiation
E=neE n is excess charge
Bigger and beyond original object
Fnet=0 thus Fg=Fs mg=kx

8. nucleon
Proton or neutron
When in parallel
Virtual upright smaller
Is equal to gravitational force

9. larger the index of refraction..
Mass
Angle of incidence=angle of reflection
Slower light will travel
None

10. s
Charge/area
Makes ?G more negative thus more spontaneous
Upright image
Sin=1 cos=0

11. find energy in circuit
Approx .7
Fnet=0 thus Fg=Fs mg=kx
E=Pt
Protons+neutrons

12. object placed inside focal point in converging lens create What type of image
Spring constant
Virtual upright
Moving charge
F=r/2

13. freezing point of H2O in K and C
Charge/length
It is halved
273K 0
Difference between the absolute and atm pressure Pg=P- Patm

14. photoelectric effect
EV
Incident light is used to free electrons from a metal
Fusion
Equilibrium position

15. fission
T=rF where F is proportional to mass and r is distance from pivot
Splitting of atomic nuclei
C=e(A/d)
V^2=vo^2+2a?x ?x=1/2(vo+v)t

16. electric field of parallel plate capacitor
Energy of electrons
E=neE n is excess charge
V=?A
E=V/d

17. fungal cells unlike animals cells do not contain
Centrioles
Ceq=C1+C2+C3 Veq=V1=V2=V3
C=Q/V
Virtual upright

18. 60
F1/A1=F2/A2
Sin=v3/2 cos=1/2
image/object
E=V/d

19. atomic mass number represents
F=qvBetasin?
Diopters
Protons+neutrons
F=nv/2L

20. unit of current
Ampere (1C/s)
When ?=90 b/c sin90=1
C=eoKA/D
Protons+neutrons

21. weight
W=mg=?Vg
N*s/m^2
F=- kx
Sin=0 cos=1

22. speed of sound in proportional to...
P=IV
Vbulk modulus
C=Q/V
More rigid material

23. sound level
Beta=10Log(I/Io)
Hydrostatics
E=Pt
2pvm/k

24. potential energy of spring
Conductor
Sin=0 cos=1
Minimum frequency of light that will cause emission of an electron
U=(1/2)kx^2

25. (+) magnification signifies
Spring constant
Upright image
Pressure to move - voltage when no charge is moving between 2 terminals
?=2L/n

26. power is defined as
20 Hz to 20 -000 Hz
Charge/area
A=v^2/r
Rate of doing work

27. boiling point of H2O in K and C
373K 100
Incident ray
None
Fnet=0 thus Fg=Fs mg=kx

28. atoms atomic number represents
Dispersion
Number of protons in nucleus
Force a molecule of liquid feels toward molecules of some other substance
Inverted image

29. max frequency of X- ray depends ONLY on...
Photon energy must be greater than work function of the material
700nm -400nm
Energy of electrons
Electric fields of all the light waves are oriented in the same direction

30. electric field and magnetic field are...
More flow less resistance
Perpendicular to each other
Substance is more dense then water
Side opposite From which light originates

31. parabolic mirror: object in front of focal point
Virtual upright
Charge/length
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Force applied parallel to objects surface

32. plane mirrors create What type of image
Spreading out of light as it passes through a narrow opening
Increases
C=Q/V
Virtual

33. force experience by stationary particle in magnetic field
It is halved
Vo^2+2a(?x)
None
Ampere (1C/s)

34. What is displacement equation
P=m?v
New/old
A Calorie is a nutritional term equal to 1000 calories
?x=1/2(v+vo)t

35. under constant acceleration V(average)=
(Vo+v)/2
V=IR
EV
Current*voltage

36. calculate binding energy
(mass defect)(speed of light)^2
F=- F
Converted to extra kinetic energy of the emitted electron
T=rF where F is proportional to mass and r is distance from pivot

37. planet orbiting a star - centripetal force
Image is always upright virtual and smaller
Is equal to gravitational force
WATTS
Negative

38. frequency of spring is inversely proportional to...
???
Mass
Difference between the mass of nucleus and the sum of nucleons
Vsin?

39. period of pendulum
Substance is less dense then water
C=Q/V
When ?=90 b/c sin90=1
2pvL/g

40. when unlike charges move away from each other - U of the system
U=(1/2)kx^2
Side opposite From which light originates
Conduction
Increases

41. image created when converging (concave) mirror when object is placed beyond focal point
Solid to gas
Yield strength
Real inverted image
20 Hz to 20 -000 Hz

42. convex mirror
Frequency
Image is always upright virtual and smaller
Amount of energy required for phase change from solid to liquid
Virtual upright

43. volumetric rate of flow (property)
Real inverted
F=Gm1m2/r^2
Constant for closed system independent of changes in area
N*s/m^2

44. equation for v between two parallel plates
V=ED
B=
Makes ?G more negative thus more spontaneous
Angle of incidence=angle of reflection

45. Newtons 1st law of motion
Difference between the mass of nucleus and the sum of nucleons
Difference between the absolute and atm pressure Pg=P- Patm
Body in motion remains in motion unless net force acts upon it
0K -273

46. units for viscosity
V=kq/r
20 Hz to 20 -000 Hz
E=1/2k(A^2)
N*s/m^2

47. material with moderate resistance
Protons+neutrons
Resistor
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
No net force acting on it

48. large moduli value
Negative
More rigid material
Derive universal gravitation equation
Kg*m/s^2

49. relationship between linear thermal expansion and volumetric thermal expansion
3a=Beta
Number of protons
Force and acceleration
Low voltage to high voltage

50. kirchhoff's rule -- travel from positive to negative
1/2mv^2
Voltage
Emf is negative
Increases