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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. What does atoms atomic weight represent
Spreading out of light as it passes through a narrow opening
N=c/v
None
Weighted average of the masses of the element
2. work function
Vot+1/2at^2=(V0+v/2)t
Energy required to free electron from given metal
V=IR
Upright image
3. length of resistor
Increase length increase resistance
It is halved
Q=mL
700nm -400nm
4. 'real' side of a lens
V=?A
Emf is positive
Side opposite From which light originates
Ceq=C1+C2+C3 Veq=V1=V2=V3
5. equation for capacitance with dielectric
Surface
Req=R1+R2+R3 Veq=V1+V2+V3
C=eoKA/D
Vbulk modulus
6. material with low resistance
U=1/2QV=1/2CV^2=1/2Q^2/C
F=nv/2L
Current*voltage
Conductor
7. volume thermal expansion of a solid
?V=BetaV?T
F=r/2
Farad 1 F= 1 c/v
N2>n1
8. work in electromagnetic field
W=qv
W'=?E=?KE+?U
New/old
(Vo+v)/2
9. capacitors in parallel
M1v1=m2v2
It is halved
Ceq=C1+C2+C3 Veq=V1=V2=V3
Virtual upright
10. 30
E*r
V=kq/r
Sin=1/2 cos=v3/2
W'=?E=?KE+?U
11. for photoelectric material to liberate an electron
Photon energy must be greater than work function of the material
P=IA
Body in motion remains in motion unless net force acts upon it
Derive universal gravitation equation
12. absolute zero in K and C
Minimum frequency of light that will cause emission of an electron
F=1/2(r)
0K -273
Conduction
13. 90
Virtual upright
Insulator
Sin=1 cos=0
E=???=hc/?
14. conservation of energy law
Holds whenever we have a change in energy ?E=?KE+?PE=0
???
700nm -400nm
2pr
15. Bernoulli's equation
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
Pressure to move - voltage when no charge is moving between 2 terminals
F=q/e0
F=xk=mg
16. parabolic mirror: object between c and f - image is...
Bigger and beyond original object
V=kq/r
Force applied parallel to objects surface
F=1/2(r)
17. magnitude of magnetic field for current carrying wire
Degree=p/180 radian
Beta=
Inverted image
P=i^2R=V^2/R=IV
18. 60
Real inverted
Difference between the absolute and atm pressure Pg=P- Patm
Voltage
Sin=v3/2 cos=1/2
19. adhesion
B=
Yield strength
Force a molecule of liquid feels toward molecules of some other substance
Sin=1/2 cos=v3/2
20. 0
Sin=0 cos=1
Decrease in pressure that fluid exerts on the walls of the container
Vo^2+2a(?x)
1000 kg/m^3 or 1 g/cm^3
21. parabolic mirror: object in front of focal point
Virtual upright
Vbulk modulus
Work/time
F=qvBetasin?
22. viscosity
Solid to gas
The liquid itself not the object
Fluid resistance to flow
Sin=1 cos=0
23. closed pipe frequency
Ampere (1C/s)
F=1/2(r)
Bigger and beyond original object
??=nv/4L
24. deposition
Convection
New/old
700nm -400nm
Gas to solid
25. degrees to radians
As speed of fluid increases pressure and potential energy decrease
Degree=p/180 radian
Moving charge
Energy required to free electron from given metal
26. cohesion
Force a molecule of liquid feels toward the other molecules of the liquid
E=V/d
F=qvBetasin?
1000 kg/m^3 or 1 g/cm^3
27. reflection law
1/2mv^2
Weighted average of the masses of the element
Emf is negative
Angle of incidence=angle of reflection
28. speed of sound in proportional to...
None
Fluid resistance to flow
Vbulk modulus
Image is always upright virtual and smaller
29. parabolic mirror: image at focal point
Virtual
No image is formed
Number of protons
F=I(L*B)
30. polarized light
V=kq/r
Moving charge
Emf is positive
Electric fields of all the light waves are oriented in the same direction
31. When is torque maximum
Nsin?incident=nsin?refraction
Inverted image
When ?=90 b/c sin90=1
Incident light is used to free electrons from a metal
32. units for power
B=(F/A)/(?V/V)
Charge/length
?=4L/n
WATTS
33. (+) magnification signifies
Side opposite From which light originates
Upright image
Vsin?
2pr
34. dynamic pressure
F=I(L*B)
(1/2)?v^2
Gamma decay
The shortest wavelength
35. under what conditions will light undergo total internal reflection
Real inverted
Light travels from high n to lower n with an angle of incidence greater than the critical angle
Sin=0 cos=-1
T=rFsin?
36. a virtual image has what kind of image distance
Negative
Weighted average of the masses of the element
Solid to gas
Number of protons in nucleus
37. momentum
Voltage
P=m?v
Moving charge
F=r/2
38. units for power of a lens
Diopters
Slower light will travel
Equilibrium position
U=QV
39. when an electron absorbs a photon
It jumps to higher energy level
Energy required to free electron from given metal
T=rFsin?
V^2=vo^2+2a?x ?x=1/2(vo+v)t
40. angular frequency of spring ?
Buoyant force equals blocks weight
(mass defect)(speed of light)^2
Resistor
?=vk/m=2p??
41. surface tension results from
Cohesion
U=q?v
Makes ?G more negative thus more spontaneous
Light travels from high n to lower n with an angle of incidence greater than the critical angle
42. electric field equation
Constant for closed system independent of changes in area
20 Hz to 20 -000 Hz
2pvL/g
E=kQ/r^2
43. density with units
Yield strength
4 Hz
N*s/m^2
?=m/v kg/m^3 g/ml g/cm^3
44. Newtons 1st law of motion
C=e(A/d)
Body in motion remains in motion unless net force acts upon it
None
1/Ceq=1/C1+1/C2+1/C3 Veq=V1+V2+V3
45. power dissipated by resistor (3 ways)
Ampere (1C/s)
P=i^2R=V^2/R=IV
P=i^2r
J=Force*Time=mv - mvo=?p
46. focal for spherical mirrors
Electric fields of all the light waves are oriented in the same direction
F=1/2(r)
1000 kg/m^3 or 1 g/cm^3
P=IV
47. small moduli value
M1v1=m2v2
Beta=10Log(I/Io)
More malleable material
F/A
48. type of heat transfer involving the physical motion of heated material
Convection
N2>n1
The liquid itself not the object
New/old
49. total horizontal distance traveled by projectile
X=(initial horizontal v)(time in air)
2pr
?=m/v kg/m^3 g/ml g/cm^3
Buoyant force equals blocks weight
50. amplitude of spring is proportional to...
K+U=constant
Makes ?G more negative thus more spontaneous
Force and acceleration
W'=?E=?KE+?U