Test your basic knowledge |

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. work done by non conservative force

2. magnitude of current
F=ma
Angle of incidence=angle of reflection
F=- F
I=?q/?t

3. equation relating heat gained and temperature change
None
Cohesion
A Calorie is a nutritional term equal to 1000 calories
Q=mc?t

4. diffraction
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Spreading out of light as it passes through a narrow opening
T=rF where F is proportional to mass and r is distance from pivot
?=2L/n

5. atomic mass number represents
V=???
Protons+neutrons
Is equal to gravitational force
E=Pt

6. lever arm is halved what happens to torque
100% of the object will be submerged but will not sink
Wave speed
Virtual upright
It is halved

7. beat frequencies for two frequencies differing by 4 Hz
4 Hz
Side opposite From which light originates
U=1/2QV=1/2CV^2=1/2Q^2/C
Upright image

8. type of heat transfer involving the physical motion of heated material
WATTS
A=v^2/r
F=E*A
Convection

9. length of resistor
Longitudinal
Energy of electrons
Increase length increase resistance
Real inverted

10. amplitude of spring is proportional to...
Makes ?G more negative thus more spontaneous
None
Resistor
Force and acceleration

11. pressure
Number of protons in nucleus
X=(initial horizontal v)(time in air)
F/A
E=V/d

12. unit for energy beside J
V=IR
EV
Fk=
F=nv/2L

13. solves for power lost during transmission (one way)
?x=1/2(v+vo)t
P=i^2r
Difference between the absolute and atm pressure Pg=P- Patm
Conductor

14. electric field of parallel plate capacitor
E=V/d
Yield strength
Sin=v3/2 cos=1/2
Pressure to move - voltage when no charge is moving between 2 terminals

15. v2/2
Sin=0 cos=-1
Approx .7
Ampere (1C/s)
Buoyant force equals blocks weight

16. units for capacitance
2
Diopters
More rigid material
Farad 1 F= 1 c/v

17. energy stored in capacitor
U=1/2QV=1/2CV^2=1/2Q^2/C
V=kq/r
The liquid itself not the object
Ampere (1C/s)

18. fungal cells unlike animals cells do not contain
Perpendicular to each other
Centrioles
Difference between the mass of nucleus and the sum of nucleons
F=- F

19. mirror image is on same side as object
Real image
Approx .7
Degree=p/180 radian
Force and acceleration

20. momentum
Real inverted
Cohesion
P=m?v
Wave speed

21. adhesion
Force a molecule of liquid feels toward molecules of some other substance
Nsin?incident=nsin?refraction
F=mv^2/r
Gas to solid

22. convex mirror
Proton or neutron
E=Pt
Image is always upright virtual and smaller
No net force acting on it

23. if cell is not driving current
Internal resistance is zero voltage=emf
?=m/v kg/m^3 g/ml g/cm^3
20 Hz to 20 -000 Hz
Will never decrease capacitance

24. under constant acceleration - v=
Is equal to gravitational force
M1v1=m2v2
N is proportional to 1/?
Vo+at

25. for photoelectric material to liberate an electron
?=vk/m=2p??
Vrms=Vmax/v2
Low voltage to high voltage
Photon energy must be greater than work function of the material

26. force experience by stationary particle in magnetic field
1/2mv^2
Light travels from high n to lower n with an angle of incidence greater than the critical angle
None
U=QV

27. power (in general)
Work/time
Increases
F=mv^2/r
MRT

28. focal length
Convection
None
1/f=1/o+ 1/i
Farad 1 F= 1 c/v

29. youngs modulus
Q=mL
F/A
Y=(F/A)/(?L/L) stress over strain
F=E*A

30. degrees to radians
N=c/v
Energy required to free electron from given metal
Degree=p/180 radian
Converted to extra kinetic energy of the emitted electron

31. What does atoms atomic weight represent
(mass defect)(speed of light)^2
Weighted average of the masses of the element
Req=R1+R2+R3 Veq=V1+V2+V3
No net force acting on it

32. work in electromagnetic field
P=i^2R=V^2/R=IV
Energy gained by particle with charge of e when moved through one volt
N*s/m^2
W=qv

33. planet orbiting a star - centripetal force
Is equal to gravitational force
Low voltage to high voltage
Converted to extra kinetic energy of the emitted electron
Increase length increase resistance

34. magnetic field of solenoid
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
Vrms=Vmax/v2
B=
3

35. equation for v between two parallel plates
Intensity
V=ED
Degree=p/180 radian
Surface

36. all harmonics have the same
Emf is negative
Wave speed
Beta=
Fluid resistance to flow

37. Bernoulli's equation
Protons+neutrons
???
Incident light is used to free electrons from a metal
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

38. parabolic mirror: object between c and f - image is...
273K 0
Photon energy must be greater than work function of the material
Bigger and beyond original object
2

39. magnetic field is created by loop wire - What is magnetic field at center of loop
?L=aL?T
Beta=
U=q?v
?=m/v kg/m^3 g/ml g/cm^3

40. ideal ammeter
Zero resistance
Angle of incidence=angle of reflection
Proton or neutron
N1>n2

41. electric potential energy
image/object
Vrms=Vmax/v2
1/f=1/o+ 1/i
U=QV

42. speed of light in a vacuum (c) =
Emf is negative
???
Centrioles
F=c/?

43. 60
Sin=v3/2 cos=1/2
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Protons+neutrons
A sin?=n?

44. loudness of sound
Intensity
EV
N1>n2
Nsin?incident=nsin?refraction

45. larger the index of refraction..
Solute whose solution is conductive
(1/2)?v^2
Slower light will travel
?V=BetaV?T

46. units for power
Amount of energy required for phase change from solid to liquid
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
?=m/v kg/m^3 g/ml g/cm^3
WATTS

47. charge on the plates of a capacitor
Derive universal gravitation equation
F1/A1=F2/A2
Q=CV
image/object

48. center of curvature is...
Req=R1+R2+R3 Veq=V1+V2+V3
image/object
2 times the focal distance
Vbulk modulus

49. When is torque maximum
Longitudinal
Virtual
When ?=90 b/c sin90=1
Negative

50. audible wave frequency
(mass defect)(speed of light)^2
Req=R1+R2+R3 Veq=V1+V2+V3
20 Hz to 20 -000 Hz
Number of protons in nucleus