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. viscosity
Fluid resistance to flow
Real inverted image
Q=mc?t
F=qvBetasin?

2. shear
Wave speed
U=1/2QV=1/2CV^2=1/2Q^2/C
Force applied parallel to objects surface
Slower light will travel

3. surface tension results from
?=vk/m=2p??
Radiation
Negative
Cohesion

4. determine spring constant
Increases
Moving charge
F=xk=mg
F=Gm1m2/r^2

5. find energy in circuit
E=1/2k(A^2)
E=Pt
Charge remains constant
Difference between the mass of nucleus and the sum of nucleons

6. planet orbiting a star - centripetal force
Fluid resistance to flow
?=2L/n
Increase length increase resistance
Is equal to gravitational force

7. ? of sound wave=
Vsin?
V/??
Virtual upright smaller
Sin=0 cos=1

8. calculate lens power
P=1/f
Fluid resistance to flow
Emf is negative
Convection

9. beat frequencies for two frequencies differing by 4 Hz
4 Hz
Spreading out of light as it passes through a narrow opening
N*s/m^2
Points away from + and toward -

10. amplitude of spring is proportional to...
U=(1/2)kx^2
B=
0K -273
Force and acceleration

11. units for viscosity
Gamma decay
N*s/m^2
Constant for closed system independent of changes in area
Kg*m/s^2

12. ideal ammeter
Fk=
Fusion
Zero resistance
Amount of energy required for phase change from solid to liquid

13. energy stored in capacitor
U=1/2QV=1/2CV^2=1/2Q^2/C
Frequency
Negative
I=P/A

14. volumetric rate of flow (property)
Constant for closed system independent of changes in area
Beta=
Diopters
???

15. resistance equation
E=kQ/r^2
W'=?E=?KE+?U
R=pL/A
Charge remains constant

16. material with low resistance
E=neE n is excess charge
Negative
Conductor
373K 100

17. equation relating heat gained and temperature change
I=P/A
Sin=0 cos=-1
Q=mc?t
Farad 1 F= 1 c/v

18. image created when converging (concave) mirror when object is placed beyond focal point
Frequency
Real inverted image
W=mg=?Vg
Irms=Imax/v2

19. units for capacitance
F=1/2(r)
Farad 1 F= 1 c/v
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Q=CV

20. in calculating torque - which direction is + and which is
100% of the object will be submerged but will not sink
Conduction
Sin=1/2 cos=v3/2
Counterclockwise is + clockwise is -

21. speed of sound in proportional to...
Vbulk modulus
?=2L/n
U=1/2QV=1/2CV^2=1/2Q^2/C
Sin=1 cos=0

22. power is defined as
Intensity
The liquid itself not the object
Rate of doing work
W=qv

23. closed pipe frequency
??=nv/4L
C=e(A/d)
E=V/d
Holds whenever we have a change in energy ?E=?KE+?PE=0

24. under constant acceleration - two ways ?x=
Wave speed
Vot+1/2at^2=(V0+v/2)t
Holds whenever we have a change in energy ?E=?KE+?PE=0
U=q?v

25. electrolyte
F=xk=mg
Will never decrease capacitance
Solute whose solution is conductive
2pvm/k

26. negative charge moves spontaneously from
3a=Beta
Low voltage to high voltage
3
Frequency

27. torque is given by
F=qvBetasin?
T=rF where F is proportional to mass and r is distance from pivot
Radiation
F=E*A

28. energy of moving proton
Req=R1+R2+R3 Veq=V1+V2+V3
1/2mv^2
V=IR
MRT

29. As current flows through a resistor
Convection
Vbulk modulus
Decrease in pressure that fluid exerts on the walls of the container
Charge remains constant

30. specific gravity greater than one
Substance is more dense then water
?=2L/n
None
No image is formed

31. capacitance equation in circuit
C=Q/V
B=(F/A)/(?V/V)
Emf is positive
More rigid material

32. study of fluids at rest
New/old
None
Hydrostatics
F=q/e0

33. point of shape change beyond which a material can go back to normal
It is halved
Q=mc?t
Yield strength
Irms=Imax/v2

34. 45
Sin=v2/2 cos=v2/2
Minimum frequency of light that will cause emission of an electron
E=kQ/r^2
It jumps to higher energy level

35. boiling point of H2O in K and C
373K 100
?=vk/m=2p??
1/2mv^2
U=1/2QV=1/2CV^2=1/2Q^2/C

36. only radioactive decay that conserves the nucleus charge
F=E*A
Force and acceleration
Radiation
Gamma decay

37. to find acceleration due to gravity
Derive universal gravitation equation
P=1/f
Vbulk modulus
P=IV

38. frequency of spring is proportional to...
2 times the focal distance
Dispersion
Spring constant
V=kQ/r

39. velocity for a wave
V=???
Virtual upright
When ?=90 b/c sin90=1
None

40. convex mirror
Coulomb=amphere*sec
Image is always upright virtual and smaller
V=kq/r
Resistor

41. capacitance of simple parallel plate (not according to Ohms)
F/A
When ?=90 b/c sin90=1
Conductor
C=e(A/d)

42. intensity of sound
Vcos?
I=P/A
M1v1=m2v2
It jumps to higher energy level

43. calculate binding energy
Upright image
(mass defect)(speed of light)^2
F=r/2
Rate of doing work

44. meaning of Bernouili's equation
E=kQ/r^2
Buoyant force equals blocks weight
F=q/e0
As speed of fluid increases pressure and potential energy decrease

45. equation for static friction
Fs=
Farad 1 F= 1 c/v
?=2L/n
I=P/A

46. period of spring
Emf is positive
2pvm/k
V=ED
Radiation

47. 90
Sin=1 cos=0
Diopters
2 times the focal distance
Emf is negative

48. all harmonics have the same
Converted to extra kinetic energy of the emitted electron
Wave speed
Makes ?G more negative thus more spontaneous
?=2L/n

49. across capacitor what remains constant
Difference between the absolute and atm pressure Pg=P- Patm
Voltage
Neutron is converted into a proton and an electron is emitted
U=QV

50. for object in SHM E=
K+U=constant
T=rF where F is proportional to mass and r is distance from pivot
N*s/m^2
Electric fields of all the light waves are oriented in the same direction