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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. planet orbiting a star - centripetal force
V=?A
Is equal to gravitational force
F=E*A
Body in motion remains in motion unless net force acts upon it
2. absolute zero in K and C
F=mv^2/r
Pascal (Pa) N/m^2
EV
0K -273
3. light ray that strikes a surface
Incident ray
F1/A1=F2/A2
E=V/d
W=mg=?Vg
4. material with very high resistance
Insulator
Neutron is converted into a proton and an electron is emitted
Charge/length
As speed of fluid increases pressure and potential energy decrease
5. When is voltage constant across capacitors
Q=mL
Sin=v3/2 cos=1/2
Virtual upright
When in parallel
6. object placed inside focal point in converging lens create What type of image
Protons+neutrons
Frequency
Increase length increase resistance
Virtual upright
7. electric field maximum of insulating sphere
Perpendicular to each other
Incident light is used to free electrons from a metal
Photon energy must be greater than work function of the material
Surface
8. 45
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
Sin=v2/2 cos=v2/2
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
2
9. plane mirrors create What type of image
Body in motion remains in motion unless net force acts upon it
U=q?v
Angle of incidence=angle of reflection
Virtual
10. conservation of energy law
Pascal (Pa) N/m^2
Internal resistance is zero voltage=emf
Minimum frequency of light that will cause emission of an electron
Holds whenever we have a change in energy ?E=?KE+?PE=0
11. find factor by which something has been changed
B=(F/A)/(?V/V)
F=ma
New/old
Moving charge
12. units for capacitance
image/object
More malleable material
Farad 1 F= 1 c/v
F=nv/2L
13. solves for power lost during transmission (one way)
Convection
Sin=0 cos=1
Ampere (1C/s)
P=i^2r
14. resistance in series
Moving charge
E=V/d
Spring constant
Req=R1+R2+R3 Veq=V1+V2+V3
15. nucleon
Beta=
Emf is positive
Proton or neutron
F=mv^2/r
16. in calculating torque - which direction is + and which is
Fusion
The liquid itself not the object
Convection
Counterclockwise is + clockwise is -
17. fungal cells unlike animals cells do not contain
F=- kx
Perpendicular to each other
Photon energy must be greater than work function of the material
Centrioles
18. surface tension results from
C=e(A/d)
Rate of doing work
Vcos?
Cohesion
19. energy of photon
U=1/2QV=1/2CV^2=1/2Q^2/C
E=???=hc/?
?=2L/n
Charge/length
20. total horizontal distance traveled by projectile
Rate of doing work
X=(initial horizontal v)(time in air)
F=- F
When in parallel
21. find power in circuit
Q=CV
2pvL/g
A=v^2/r
Current*voltage
22. light bends away from normal when
It jumps to higher energy level
N1>n2
Beta=
(1/2)?v^2
23. material with low resistance
Conductor
Dispersion
V=?A
Longitudinal
24. power of sound wave
Real inverted
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
P=IA
Force a molecule of liquid feels toward molecules of some other substance
25. work in electromagnetic field
1/f=1/o+ 1/i
V=kQ/r
The liquid itself not the object
W=qv
26. vertical velocity of projectile
Vsin?
Resistor
F=1/2(r)
?V=BetaV?T
27. 0
Angle of incidence=angle of reflection
Sin=0 cos=1
A=v^2/r
Fs=
28. specific gravity is less than one
J=Force*Time=mv - mvo=?p
The shortest wavelength
Substance is less dense then water
Y=(F/A)/(?L/L) stress over strain
29. closed pipe wavelength
N2>n1
F=1/2(r)
X=(initial horizontal v)(time in air)
?=4L/n
30. gravitational force formula
F=Gm1m2/r^2
Real inverted
W=Fdcos?
2pvL/g
31. resistance in parallel
1/Req=1/R1+1/R2+1/R3 Veq=V1=V2=V3
Convection
Work/time
Upright image
32. what creates a magnetic field
P=i^2R=V^2/R=IV
N2>n1
Moving charge
When ?=90 b/c sin90=1
33. Bernoulli's equation
Resistor
P1+?gy of 1 + 1/2?v^2 of 1=P2+?gy of 2 + 1/2?v^2 of 2
700nm -400nm
Coulomb=amphere*sec
34. type of image ALWAYS created by diverging (convex) mirror
Virtual upright smaller
???
V^2=vo^2+2a?x ?x=1/2(vo+v)t
B=(F/A)/(?V/V)
35. capacitance equation in circuit
C=Q/V
Cohesion
Vbulk modulus
Frequency
36. find voltage (original)
100% of the object will be submerged but will not sink
Electric fields of all the light waves are oriented in the same direction
V=kq/r
Vo+at
37. frequency of light given wavelength
F=c/?
V=kQ/r
E=neE n is excess charge
Substance is more dense then water
38. magnetic field of solenoid
B=
1000 kg/m^3 or 1 g/cm^3
E=1/2k(A^2)
C=e(A/d)
39. polarized light
Electric fields of all the light waves are oriented in the same direction
Longitudinal
N is proportional to 1/?
Difference between the mass of nucleus and the sum of nucleons
40. incandescence
P=IA
Amount of energy required for phase change from solid to liquid
New/old
Light emitted due to heat
41. charge on the plates of a capacitor
Convection
Q=CV
A=v^2/r
Req=R1+R2+R3 Veq=V1+V2+V3
42. kirchhoff's rule -- travel from positive to negative
?L=aL?T
Real inverted image
Emf is negative
E=Pt
43. units for power
WATTS
Dispersion
?V=BetaV?T
V=???
44. speed of the spring
VA=V/time and v1A1=v2A2 (fluids will flow more quickly through narrow passages)
?=vk/m=2p??
Constant for closed system independent of changes in area
V=?A
45. energy of a photon is dependent on...
Force applied parallel to objects surface
When ?=90 b/c sin90=1
Frequency
E=1/2k(A^2)
46. increase in velocity of a fluid is associated with
F=xk=mg
Insulator
Decrease in pressure that fluid exerts on the walls of the container
Sin=1/2 cos=v3/2
47. across capacitor what remains constant
Voltage
Sin=1/2 cos=v3/2
Fk=
W'=?E=?KE+?U
48. audible wave frequency
20 Hz to 20 -000 Hz
2
V=ED
More rigid material
49. diffraction
Charge/length
Spreading out of light as it passes through a narrow opening
Number of protons
Light emitted due to heat
50. mirror image is on same side as object
Work/time
Real image
Internal resistance is zero voltage=emf
1000 kg/m^3 or 1 g/cm^3