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MCAT Physics Formulas

Subjects : mcat, science

Instructions:

Answer 50 questions in 30 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. a in isotopic notation
Mass number
1000 kg/m^3 or 1 g/cm^3
P=i^2R=V^2/R=IV
Sin=1 cos=0

2. formula for impulse (J)
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Intensity
J=Force*Time=mv - mvo=?p
WATTS

3. increasing emf has What effect on ?G
Virtual upright
As speed of fluid increases pressure and potential energy decrease
E=???=hc/?
Makes ?G more negative thus more spontaneous

4. adhesion
Light emitted due to heat
?=m/v kg/m^3 g/ml g/cm^3
2 times the focal distance
Force a molecule of liquid feels toward molecules of some other substance

5. object placed beyond focal point in converging lens create What type of image
Nsin?incident=nsin?refraction
Equilibrium position
Vcos?
Real inverted

6. for object in SHM E=
K+U=constant
Emf is negative
?=2L/n
Internal resistance is zero voltage=emf

7. absolute zero in K and C
E=Pt
E=neE n is excess charge
0K -273
W'=?E=?KE+?U

8. temperature and resistors
Buoyant force equals blocks weight
E=???=hc/?
Upright image
Higher temperature increases resistance

9. snell's law derivative
Yield strength
N is proportional to 1/?
Amount of energy required for phase change from solid to liquid
F=- kx

10. relate velocities and displacement 2 ways
Perpendicular to each other
Radiation
V^2=vo^2+2a?x ?x=1/2(vo+v)t
F=nv/2L

11. what creates a magnetic field
It is halved
Energy of electrons
Moving charge
Approx .7

12. deposition
W=qv
Gas to solid
Number of protons in nucleus
E=1/2k(A^2)

13. period of spring
Will never decrease capacitance
Voltage
Is equal to gravitational force
2pvm/k

14. 30
Increase length increase resistance
?x=1/2(v+vo)t
Sin=1/2 cos=v3/2
MRT

15. fission
V=kq/r
When velocity of the fluid exceeds critical velocity
Rate of doing work
Splitting of atomic nuclei

16. formula for solution which is diluted related to initial concentration
Constant for closed system independent of changes in area
E*r
M1v1=m2v2
Ampere (1C/s)

17. magnification=
3a=Beta
Gamma decay
W=qv
image/object

18. threshold frequency (photoelectric effect)
Frequency
Minimum frequency of light that will cause emission of an electron
Force applied parallel to objects surface
T=rFsin?

19. Capacitors in series
T=rFsin?
Incident ray
Virtual upright
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3

20. freezing point of H2O in K and C
273K 0
Y=(F/A)/(?L/L) stress over strain
Conductor
Will never decrease capacitance

21. equation for kinetic friction
Amount of energy required for phase change from solid to liquid
Fk=
Current*voltage
Approx .7

22. plane mirrors create What type of image
U=(1/2)kx^2
1000 kg/m^3 or 1 g/cm^3
Virtual
F=qvBetasin?

23. suppose a block is floating in H2O - What does this mean
Real inverted
Buoyant force equals blocks weight
Q=CV
V/??

24. in calculating torque - which direction is + and which is
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
Makes ?G more negative thus more spontaneous
Approx .7
Counterclockwise is + clockwise is -

25. under constant acceleration V(average)=
(Vo+v)/2
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Gas to solid
F=mv^2/r

26. polarized light
Sin=v2/2 cos=v2/2
Gamma decay
Electric fields of all the light waves are oriented in the same direction
Number of protons

27. beat frequencies for two frequencies differing by 4 Hz
It jumps to higher energy level
Upright image
4 Hz
Virtual upright

28. circumference of a circle
Real image
F=nv/2L
Force a molecule of liquid feels toward the other molecules of the liquid
2pr

29. to find acceleration due to gravity
Mass
F=nv/2L
V/??
Derive universal gravitation equation

30. youngs modulus
Real image
Y=(F/A)/(?L/L) stress over strain
Energy required to free electron from given metal
Increases

31. vertical velocity of projectile
Number of protons in nucleus
Vsin?
No net force acting on it
A=v^2/r

32. tone with shortest period has
The shortest wavelength
Higher temperature increases resistance
E=???=hc/?
F=xk=mg

33. torque is given by
Centrioles
J=Force*Time=mv - mvo=?p
T=rF where F is proportional to mass and r is distance from pivot
Cohesion

34. equation relating heat gained and temperature change
Conduction
I=?q/?t
Q=mc?t
?=m/v kg/m^3 g/ml g/cm^3

35. calculate binding energy
Force a molecule of liquid feels toward molecules of some other substance
(mass defect)(speed of light)^2
Sin=0 cos=1
Frequency

36. work as product of pressure and volume change
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Negative
F1/A1=F2/A2
2pr

37. dynamic pressure
Sin=1/2 cos=v3/2
Derive universal gravitation equation
Vbulk modulus
(1/2)?v^2

38. electric flux
F=nv/2L
2pvL/g
Gamma decay
F=E*A

39. Ohm's Law
273K 0
V=IR
As speed of fluid increases pressure and potential energy decrease
A sin?=n?

40. resistance equation
A=v^2/r
3a=Beta
R=pL/A
Holds whenever we have a change in energy ?E=?KE+?PE=0

41. under constant acceleration - v=
F=1/2(r)
Vo+at
Emf is negative
Number of protons

42. When is torque maximum
Y=(F/A)/(?L/L) stress over strain
Is equal to gravitational force
Vot+1/2at^2=(V0+v/2)t
When ?=90 b/c sin90=1

43. electric work
Incident light is used to free electrons from a metal
P=IV
U=q?v
Higher temperature increases resistance

44. units for power
3
Fk=
WATTS
P=i^2R=V^2/R=IV

45. sound waves are what kind of waves
Neutron is converted into a proton and an electron is emitted
(mass defect)(speed of light)^2
Longitudinal
Vo^2+2a(?x)

46. angular frequency of spring ?
?=vk/m=2p??
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Frequency
K+U=constant

47. charge of beta particles
Difference between the absolute and atm pressure Pg=P- Patm
Gamma decay
V=ED
Negative

48. work function
E=1/2k(A^2)
Emf is negative
Energy required to free electron from given metal
No image is formed

49. material with moderate resistance
Force applied parallel to objects surface
Resistor
Buoyant force equals blocks weight
273K 0

50. material with very high resistance
Charge remains constant
N*s/m^2
Insulator
E=Pt