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Test your basic knowledge |
MCAT Physics Formulas
Start Test
Study First
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. calculate lens power
N2>n1
Points away from + and toward -
?=4L/n
P=1/f
2. osmotic pressure formula
MRT
Resistor
More flow less resistance
Mass
3. planet orbiting a star - centripetal force
?=m/v kg/m^3 g/ml g/cm^3
700nm -400nm
Number of protons
Is equal to gravitational force
4. find voltage (original)
V=kq/r
Beta=10Log(I/Io)
Incident ray
The liquid itself not the object
5. conservation of energy law
?x=1/2(v+vo)t
A Calorie is a nutritional term equal to 1000 calories
Holds whenever we have a change in energy ?E=?KE+?PE=0
T=rFsin?
6. Log(100)=
?=vk/m=2p??
2
Hydrostatics
V=ED
7. angular frequency of spring ?
V/??
T=rFsin?
Longitudinal
?=vk/m=2p??
8. Find electric potential given electric field
?=2L/n
N=c/v
E*r
The shortest wavelength
9. magnitude of magnetic field for current carrying wire
Beta=
F=nv/2L
W'=?E=?KE+?U
Substance is more dense then water
10. magnification=
image/object
Virtual upright
Sin=v3/2 cos=1/2
Angle of incidence=angle of reflection
11. equation for static friction
(mass defect)(speed of light)^2
Fs=
None
Beta=
12. splitting of white light in a prim is an example of...
I=?q/?t
Dispersion
(mass defect)(speed of light)^2
T=rFsin?
13. units for power of a lens
Diopters
When velocity of the fluid exceeds critical velocity
Bigger and beyond original object
Pressure to move - voltage when no charge is moving between 2 terminals
14. total horizontal distance traveled by projectile
X=(initial horizontal v)(time in air)
U=q?v
Virtual
N1>n2
15. charge of gamma particles
More malleable material
Gas to solid
1/2mv^2
None
16. Electric Potential equation
20 Hz to 20 -000 Hz
V=kQ/r
Fk=
Proton or neutron
17. shear
Force applied parallel to objects surface
?=m/v kg/m^3 g/ml g/cm^3
(Vo+v)/2
J=Force*Time=mv - mvo=?p
18. 45
Virtual upright smaller
F=xk=mg
Sin=v2/2 cos=v2/2
When ?=90 b/c sin90=1
19. capacitance of simple parallel plate (not according to Ohms)
V=kQ/r
C=e(A/d)
Mass number
Longitudinal
20. sound waves are what kind of waves
Longitudinal
F=nv/2L
F=E*A
F=c/?
21. intensity of sound
I=P/A
Increases
Pascal (Pa) N/m^2
E=V/d
22. units for capacitance
Farad 1 F= 1 c/v
Sin=v3/2 cos=1/2
WATTS
3a=Beta
23. for object in SHM E=
K+U=constant
Approx .7
F=mv^2/r
Zero resistance
24. magnetic field of solenoid
B=
Intensity
No net force acting on it
Force applied parallel to objects surface
25. lever arm is halved what happens to torque
N=c/v
M1v1=m2v2
It is halved
Vsin?
26. pressure
Neutron is converted into a proton and an electron is emitted
F/A
Amount of energy required for phase change from solid to liquid
Photon energy must be greater than work function of the material
27. density of water
Kg*m/s^2
Image is always upright virtual and smaller
F=- kx
1000 kg/m^3 or 1 g/cm^3
28. specific gravity greater than one
P=m?v
Substance is more dense then water
WATTS
N*s/m^2
29. under what conditions will light undergo total internal reflection
EV
Light travels from high n to lower n with an angle of incidence greater than the critical angle
???
Increases
30. Log(1000)=
3
Coulomb=amphere*sec
?=2L/n
Increases
31. resistance equation
M1v1=m2v2
Charge/length
R=pL/A
Difference between the mass of nucleus and the sum of nucleons
32. 90
Conduction
Sin=1 cos=0
Counterclockwise is + clockwise is -
Proton or neutron
33. 0
It is halved
100% of the object will be submerged but will not sink
?=2L/n
Sin=0 cos=1
34. Ohm's Law
V=IR
Gamma decay
2pr
Resistor
35. under constant acceleration - v=
Q=mc?t
Vo+at
Pascal (Pa) N/m^2
B=
36. sublimation
Solid to gas
Light travels from high n to lower n with an angle of incidence greater than the critical angle
?=4L/n
Vot+1/2at^2=(V0+v/2)t
37. z in isotopic notation
When in parallel
Number of protons
F/A
Number of protons in nucleus
38. a in isotopic notation
N*s/m^2
Counterclockwise is + clockwise is -
Mass number
Vot+1/2at^2=(V0+v/2)t
39. unit of current
Ampere (1C/s)
???
MRT
2pr
40. determine spring constant
F=xk=mg
Converted to extra kinetic energy of the emitted electron
T=1/f
Work/time
41. ideal ammeter
Zero resistance
Degree=p/180 radian
Upright image
P=i^2R=V^2/R=IV
42. When is torque maximum
The liquid itself not the object
When ?=90 b/c sin90=1
?=2L/n
373K 100
43. under constant acceleration - two ways ?x=
Vot+1/2at^2=(V0+v/2)t
Wave speed
(1/2)?v^2
P=IA
44. speed of sound in proportional to...
F1/A1=F2/A2
Holds whenever we have a change in energy ?E=?KE+?PE=0
Vbulk modulus
Charge/length
45. force experienced by moving charge traveling parallel or antiparallel to magnetic field
N=c/v
None
V=kq/r
image/object
46. solves for power lost during transmission (one way)
Side opposite From which light originates
F=mv^2/r
Holds whenever we have a change in energy ?E=?KE+?PE=0
P=i^2r
47. a virtual image has what kind of image distance
Negative
2
Sin=0 cos=1
Farad 1 F= 1 c/v
48. difference between Calorie and calorie
Current*voltage
A Calorie is a nutritional term equal to 1000 calories
Force a molecule of liquid feels toward the other molecules of the liquid
Splitting of atomic nuclei
49. electromotive force
Pressure to move - voltage when no charge is moving between 2 terminals
Higher temperature increases resistance
Real inverted
J=Force*Time=mv - mvo=?p
50. velocity for a wave
V=???
Low voltage to high voltage
Converted to extra kinetic energy of the emitted electron
A sin?=n?