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Test your basic knowledge |
MCAT Physics
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. 1e0 (an electron);
speed
Constructive interference
Center of mass
beta (Beta) particle
2. E=2.3110?
3. A measure of both the speed and direction of a moving object. V=?x/?t
same gravitational work
Friction - static and kinetic
Center of mass
velocity
4. B=
Resistor's in parallel
Electric Power
parallel
Magnetic Field around a wire
5. Each resistor has the same current; differenct voltage drop. Total resistance = R1+R2+R3+. . .
6. The __________ at a horizontal surface is equal to the weight
Newton's first law - inertia
tangent
normal force
Magnetic Flux
7. RESISTANCE=VOLTAGE/CURRENT. V = IxR
8. Force equals mass times acceleration. Fnet = SFExt = mxa
9. Ainxvin = Aoutxvout A= Area v = velocity
the normal component of gravity
Continuity of Fluid Flow
Laplace's Law
Newton's Second Law
10. Change in the apparent frequency of a wave as observer and source move toward or away from each other. Toward Away.
Work done on a gas or by a gas
Doppler effect
Analysis of pulley systems
one direction as positive and another as negative
11. Momentum is a vector - so be sure to assign _________________ when adding individual momenta in calculating the total momentum.
Analysis of pulley systems
one direction as positive and another as negative
Relativistic Mass Increase
Coulomb's Law
12. F = BxAxcos ? Force caused by a magnetic field on a moving charge F = qxvxBxsin ?
Magnetic Flux
Density
There are two kind of weightlessness
Simple Pendulum
13. The value of speed/velocity - distance/displacement are interchangeable in this case - just keep a mental note of the direction. Ave acceleration = change in velocity / time
Torque forces
Kirchoff's Laws
The momentum of a bomb at rest
When acceleration is constant and there is no change in direction
14. Uniformly accelerated motion along a straight line
Energy (conservation)
Average acceleration
2nd Law of Thermodynamics
To calculate the time the projectile is in the air
15. L = L0 (1 + a? T )
vertical component
Linear Expansion
Resistor's in parallel
parallel
16. Q = mxcx?T (no phase changes!) Q = the heat added c = specific heat. ?T = temperature change - K
Kinetic friction
Doppler Effect
Heating a Solid - Liquid or Gas
Rotational Kinetic Energy
17. The law of inertia basically states the following: without an external force acting on an object - nothing will change about that object in terms of speed and direction. In the absence of an external force: xSomething at rest will remain at rest - So
18. Mass per unit of volume.?=m/V(unit : kg /m3 )
Lorentz Transformation Factor
Density
The vector sum
= kinetic friction
19. Y or S or B = stress / strain stress = F/A
When acceleration is constant and there is no change in direction
Stress and Strain
Capacitors in parallel
Doppler Effect
20. KErotational =
Uniform circular motion
Rotational Kinetic Energy
Lever
Decibel Scale
21. C = ?xeoxA / d ? = dielectric constant A = area of plates d = distance between plates eo = 8.85 E(-12) F/m
tangent
same amount of work
Capacitance of a Capacitor
Work
22. Applies to objects sitting still. An object can sit still on an inclined plane because of static friction.
Static friction
Instantaneous speed
Magnetic Flux
Deceleration
23. Also called fundamental forces: Nuclear - electromagnetic - weak - gravity
Density
4 universal forces
Potential Energy stored in a Capacitor
tangent
24. Satellites orbiting the Earth are in free fall. Their centripetal acceleration equals the acceleration from the Earth's gravity.
Center of Mass - point masses on a line
Hooke's Law
Inductors during an increase in current
Orbiting in space
25. The speed at an instant (infinitesimal time interval).
Gravity
Centripetal Force (F=- mv2/r)
Instantaneous speed
0
26. If the force and the distance applied is in the same direction...
Magnetic Field around a wire
work is positive
Ohm's Law
Potential Energy stored in a Capacitor
27. For a given mass - its weight on Earth is different from its weight on the _____.
Moon
Friction
The strong force: also called the nuclear force
Uniform circular motion
28. FF =
Magnetic Field around a wire
Lorentz Transformation Factor
Friction
Continuity (fluids)
29. When the centripetal force is taken away (Such as when the string snaps) - the object will...
fly off in a path tangent to the circle at the point of snap
Friction
in magnitude
Angular Speed vs. Linear Speed
30. You weigh more on an elevator accelerating up because F=mg + ma - where a is the ______________ of the elevator.
Linear Expansion
Electric Power
Lorentz Transformation Factor
acceleration
31. Xcm = S(mx) / Mtotal
Postulates of Special Relativity
Newton's second law (F = ma)
Coulomb's Law
Center of Mass - point masses on a line
32. Vector - has direction - rate of change in displacement.
velocity
Orbiting in space
Impulse
Torque force at Equilibrium
33. Unlike friction - gravity always acts downwards. Thus - it does not matter what detour you take because sideward motion perpendicular to the gravitational force involves no work.
Electromagnetic force
Amount of work done in gravitational field is path - independent
Kirchoff's Laws
Doppler Effect: when d is decreasing use + vo and - vs
34. When you toss something straight up and it comes down to where it started - the displacement - s - for the entire trip is _. Initial velocity and acceleration are opposite in sign.
0
Work - Power
speed
normal force
35. The principle whereby every energy transfer or transformation increases the entropy of the universe. Ordered forms of energy are at least partly converted to heat - and in spontaneous reactions - the free energy of the system also decreases. ?U = QAd
Destructive interference
Beats
2nd Law of Thermodynamics
Heating a Solid - Liquid or Gas
36. FF =
Orbiting in space
Friction Force
Translational equilibrium (Sum of Fi = 0)
Resistor's in parallel
37. Use the vertical component only- calculate the time it takes for the projectile to hit the ground.
acceleration
To calculate the time the projectile is in the air
universal gravitational constant
Thermal Expansion
38. The velocity at an instant (infinitesimal time interval).
Weight
Density
Instantaneous velocity
speed
39. Acceleration in the opposite direction.
negative
Deceleration
Torque forces
Freely falling bodies
40. Induced current flows to create a B- field opposing the change in magnetic flux
41. xSpeed: scalar - no direction - rate of change in distance.
Speed - velocity (average and instantaneous)
larger
Decibel Scale
Centripetal Force
42. ? + ?gh + 1/2 ?v2 = constant
43. The 'distance' is the distance from the center of mass between the two objects. Gravity is the _______ of the four universal forces.
weakest
free fall
Density
= kinetic friction
44. I. Linear: strain = ?L / L II. Shear: strain = ?x / L III. Volume: strain = ?V / V
Heat of a Phase Change
Density
Linear Momentum
Three kinds of strain: unit - less ratios
45. ?. equal to v(k/m) or - 2(pi)(f)
Potential Energy stored in a Capacitor
Angular frequency
Weight
one direction as positive and another as negative
46. When something is laying still on a horizontal surface - the normal force is ___________ to the weight.
Lorentz Transformation Factor
equal and opposite
Energy Released by Nuclear Fission or Fusion Reaction
Concept of a field
47. In an object going down the inclined plane at constant velocity: parallel component of gravity...
acceleration
terminal velocity
= kinetic friction
constant
48. Friction always does ___________ because frictional forces always act against the direction of motion.
negative work
weakest
scalar
Constructive interference
49. For the purposes of the MCAT - these are lines. When lines are close together - that's shows a strong field. When lines are far apart - that shows a weak field. Lines / fields have direction too - and that means they are vectors. Things travel parall
Relativistic Length Contraction
Friction
Concept of a field
Sinusoidal motion
50. Roughly 10 orders of magnitude weaker than the strong force. Responsible for radioactive decay.
Friction
Motion on an inclined plane
Weak force
Friction Force