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 function
Protons+neutrons
No net force acting on it
Energy required to free electron from given metal
The shortest wavelength

2. thermal expansion of a solid
Work/time
Holds whenever we have a change in energy ?E=?KE+?PE=0
?L=aL?T
I=P/A

3. frequency of spring is inversely proportional to...
Mass
Equilibrium position
Fnet=0 thus Fg=Fs mg=kx
B=

4. audible wave frequency
1000 kg/m^3 or 1 g/cm^3
A=v^2/r
20 Hz to 20 -000 Hz
E=Pt

5. reflection law
More flow less resistance
Angle of incidence=angle of reflection
Fusion
Decrease in pressure that fluid exerts on the walls of the container

6. magnitude of magnetic field for current carrying wire
F=ma
Coulomb=amphere*sec
Beta=
Vrms=Vmax/v2

7. work as product of pressure and volume change
More malleable material
F1/A1=F2/A2
Holds whenever we have a change in energy ?E=?KE+?PE=0
Fusion

8. parabolic mirror: image at focal point
No image is formed
Slower light will travel
P=m?v
E=???=hc/?

9. electromotive force
F=Gm1m2/r^2
2 times the focal distance
Slower light will travel
Pressure to move - voltage when no charge is moving between 2 terminals

10. frequency of light given wavelength
Surface
F1/A1=F2/A2
Internal resistance is zero voltage=emf
F=c/?

11. open pipe wavelength
Minimum frequency of light that will cause emission of an electron
Substance is less dense then water
F1/A1=F2/A2
?=2L/n

12. deposition
Fnet=0 thus Fg=Fs mg=kx
Gas to solid
MRT
Mass number

13. focal for spherical mirrors
F=1/2(r)
No image is formed
Is equal to gravitational force
Sin=0 cos=1

14. resistance in parallel
Difference between the absolute and atm pressure Pg=P- Patm
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
1/2mv^2
As speed of fluid increases pressure and potential energy decrease

15. sublimation
Sin=0 cos=-1
Solid to gas
Low voltage to high voltage
E=kQ/r^2

16. power is defined as
Rate of doing work
Virtual upright
V=???
More malleable material

17. dynamic pressure
X=(initial horizontal v)(time in air)
C=Q/V
I=?q/?t
(1/2)?v^2

18. open pipe frequency
Insulator
F=nv/2L
More rigid material
Angle of incidence=angle of reflection

19. freezing point of H2O in K and C
273K 0
Fluid resistance to flow
P=1/f
Emf is positive

20. lever arm is halved what happens to torque
Diopters
N=c/v
It is halved
Counterclockwise is + clockwise is -

21. a virtual image has what kind of image distance
Negative
I=P/A
P=i^2r
T=rF where F is proportional to mass and r is distance from pivot

22. relate focal length and radius of curvature(r)
F=r/2
C=Q/V
Rate of doing work
F=mv^2/r

23. threshold frequency (photoelectric effect)
Minimum frequency of light that will cause emission of an electron
V=kq/r
Converted to extra kinetic energy of the emitted electron
Force a molecule of liquid feels toward the other molecules of the liquid

24. kirchhoff's rule -- travel from negative to positive
Body in motion remains in motion unless net force acts upon it
None
Conduction
Emf is positive

25. formula for heat gained or lost during phase change
U=q?v
F=Gm1m2/r^2
Wave speed
Q=mL

26. negative charge moves spontaneously from
2pr
Low voltage to high voltage
C=eoKA/D
2 times the focal distance

27. unit for energy beside J
Angle of incidence=angle of reflection
EV
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
F=q/e0

28. under constant acceleration V(average)=
Approx .7
(Vo+v)/2
Ampere (1C/s)
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3

29. light bends away from normal when
N1>n2
Virtual upright
1/f=1/o+ 1/i
???

30. viscosity
Longitudinal
?=m/v kg/m^3 g/ml g/cm^3
Fluid resistance to flow
4 Hz

31. (-) magnification signifies
E=Pt
Beta=10Log(I/Io)
Nsin?incident=nsin?refraction
Inverted image

32. image created when converging (concave) mirror when object is placed beyond focal point
Negative
Real inverted image
A=v^2/r
Nsin?incident=nsin?refraction

33. atoms atomic number represents
None
T=rFsin?
Number of protons in nucleus
2pvm/k

34. calculate lens power
Converted to extra kinetic energy of the emitted electron
V=?A
P=1/f
273K 0

35. Find electric potential given electric field
20 Hz to 20 -000 Hz
Coulomb=amphere*sec
E*r
Pascal (Pa) N/m^2

36. tone with shortest period has
The shortest wavelength
0K -273
Negative
Pascal (Pa) N/m^2

37. larger the index of refraction..
Sin=1/2 cos=v3/2
273K 0
When ?=90 b/c sin90=1
Slower light will travel

38. unit of current
Points away from + and toward -
Ampere (1C/s)
Resistor
V=?A

39. closed pipe wavelength
Charge remains constant
?=4L/n
Y=(F/A)/(?L/L) stress over strain
Gamma decay

40. max frequency of X- ray depends ONLY on...
F=nv/2L
Energy of electrons
20 Hz to 20 -000 Hz
Vbulk modulus

41. current of AC
Splitting of atomic nuclei
Light emitted due to heat
Irms=Imax/v2
Charge/area

42. electric field of parallel plate capacitor
Spreading out of light as it passes through a narrow opening
E=V/d
?V=BetaV?T
Negative

43. nucleon
(1/2)?v^2
Work/time
Proton or neutron
3a=Beta

44. material with low resistance
Virtual upright
None
When velocity of the fluid exceeds critical velocity
Conductor

45. parabolic mirror: object between c and f - image is...
K+U=constant
Charge remains constant
Bigger and beyond original object
M1v1=m2v2

46. for object in SHM E=
K+U=constant
None
Energy of electrons
Conduction

47. Bernoulli's equation
W=mg=?Vg
Makes ?G more negative thus more spontaneous
Yield strength
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2

48. solves for power lost during transmission (one way)
W=mg=?Vg
Internal resistance is zero voltage=emf
P=i^2r
Resistor

49. mirror image is on same side as object
Real image
Approx .7
V^2=vo^2+2a?x ?x=1/2(vo+v)t
Weighted average of the masses of the element

50. ? of sound wave=
Approx .7
More flow less resistance
V/??
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2