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. SI unit for pressure
Slower light will travel
Number of protons
V=IR
Pascal (Pa) N/m^2

2. object placed beyond focal point in converging lens create What type of image
V=???
(1/2)?v^2
Spring constant
Real inverted

3. freezing point of H2O in K and C
???
273K 0
Current*voltage
Y=(F/A)/(?L/L) stress over strain

4. youngs modulus
P=i^2r
F=E*A
Y=(F/A)/(?L/L) stress over strain
Dispersion

5. snells law
Zero resistance
Gas to solid
Nsin?incident=nsin?refraction
Electric fields of all the light waves are oriented in the same direction

6. point of shape change beyond which a material can go back to normal
F=I(L*B)
Yield strength
700nm -400nm
Y=(F/A)/(?L/L) stress over strain

7. find factor by which something has been changed
Conductor
New/old
Fluid resistance to flow
Y=(F/A)/(?L/L) stress over strain

8. adhesion
Vcos?
Coulomb=amphere*sec
A sin?=n?
Force a molecule of liquid feels toward molecules of some other substance

9. to find acceleration due to gravity
Force applied parallel to objects surface
Increase length increase resistance
Derive universal gravitation equation
Vcos?

10. electric field equation
E=kQ/r^2
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Ampere (1C/s)
P=i^2R=V^2/R=IV

11. torque formula
Increase length increase resistance
Farad 1 F= 1 c/v
T=rFsin?
Ampere (1C/s)

12. direction of electric field created by charge
Hydrostatics
B=
F=mv^2/r
Points away from + and toward -

13. closed pipe wavelength
?=4L/n
Makes ?G more negative thus more spontaneous
E=1/2k(A^2)
Force and acceleration

14. if cell is not driving current
Internal resistance is zero voltage=emf
W=Fdcos?
V=?A
Energy gained by particle with charge of e when moved through one volt

15. The bigger the cross - section of a resistor..
More flow less resistance
E=1/2k(A^2)
Vrms=Vmax/v2
Low voltage to high voltage

16. small moduli value
Current*voltage
V=ED
More malleable material
Incident light is used to free electrons from a metal

17. fungal cells unlike animals cells do not contain
Centrioles
F=qvBetasin?
MRT
Difference between the absolute and atm pressure Pg=P- Patm

18. formula for impulse (J)
J=Force*Time=mv - mvo=?p
Insulator
V=IR
U=q?v

19. shear
Sin=1 cos=0
Vbulk modulus
100% of the object will be submerged but will not sink
Force applied parallel to objects surface

20. speed of the spring
Image is always upright virtual and smaller
Solid to gas
V=?A
N2>n1

21. convex mirror
image/object
Image is always upright virtual and smaller
F=nv/2L
B=(F/A)/(?V/V)

22. buoyant force is due to...
P=IV
Solid to gas
The liquid itself not the object
V=???

23. Log(100)=
Proton or neutron
2
T=rF where F is proportional to mass and r is distance from pivot
WATTS

24. parabolic mirror: object in front of focal point
Virtual upright
(1/2)?v^2
?=2L/n
Force and acceleration

25. electric field maximum of insulating sphere
Energy gained by particle with charge of e when moved through one volt
Surface
N2>n1
Emf is negative

26. kirchhoff's rule -- travel from negative to positive
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Vo^2+2a(?x)
Emf is positive
Wave speed

27. 90
Sin=1 cos=0
Inverted image
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
2pvm/k

28. relate charge and current
Makes ?G more negative thus more spontaneous
N2>n1
E=Pt
Coulomb=amphere*sec

29. material with low resistance
Angle of incidence=angle of reflection
Conductor
E=neE n is excess charge
As speed of fluid increases pressure and potential energy decrease

30. Gauss's Law
Beta=
E*r
Negative
F=q/e0

31. under content acceleration v^2=
E=???=hc/?
Wave speed
Vo^2+2a(?x)
Slower light will travel

32. weight
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
?=vk/m=2p??
W=mg=?Vg
Incident light is used to free electrons from a metal

33. stays constant when light travels through boundary
E=V/d
Frequency
Fs=
Ampere (1C/s)

34. resistance equation
Conductor
Resistor
Holds whenever we have a change in energy ?E=?KE+?PE=0
R=pL/A

35. ?
(Vo+v)/2
No image is formed
Charge/length
Makes ?G more negative thus more spontaneous

36. relate focal length and radius of curvature(r)
F=r/2
F=c/?
Protons+neutrons
B=(F/A)/(?V/V)

37. type of heat transfer involving transfer of energy by electromagnetic waves
Q=CV
W=Fdcos?
Radiation
P=m?v

38. When does turbulence in a fluid arise
F=mv^2/r
Real inverted
When velocity of the fluid exceeds critical velocity
F=nv/2L

39. gravitational force formula
Equilibrium position
Coulomb=amphere*sec
F=Gm1m2/r^2
V=kQ/r

40. under constant acceleration - v=
Vo+at
Resistor
4 Hz
Work/time

41. electric field of parallel plate capacitor
Number of protons
F=1/2(r)
E=V/d
Image is always upright virtual and smaller

42. sound level
Q=CV
Beta=10Log(I/Io)
3
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

43. vertical velocity of projectile
E=1/2k(A^2)
Will never decrease capacitance
Vsin?
Electric fields of all the light waves are oriented in the same direction

44. center of curvature is...
F1/A1=F2/A2
Slower light will travel
2 times the focal distance
Energy gained by particle with charge of e when moved through one volt

45. 'real' side of a lens
Side opposite From which light originates
J=Force*Time=mv - mvo=?p
Pressure to move - voltage when no charge is moving between 2 terminals
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

46. voltage of AC
1000 kg/m^3 or 1 g/cm^3
Vrms=Vmax/v2
E=1/2k(A^2)
Equilibrium position

47. threshold frequency (photoelectric effect)
Upright image
It jumps to higher energy level
Minimum frequency of light that will cause emission of an electron
Virtual upright

48. power dissipated by resistor (3 ways)
P=i^2R=V^2/R=IV
Ampere (1C/s)
As speed of fluid increases pressure and potential energy decrease
Energy gained by particle with charge of e when moved through one volt

49. unit of current
Substance is more dense then water
0K -273
W'=?E=?KE+?U
Ampere (1C/s)

50. mirror image is on same side as object
Real image
Number of protons in nucleus
Internal resistance is zero voltage=emf
R=pL/A