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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. F=g(m1m2/r^2) G = 6.67 E-11 N m
Rotational equilibrium (Sum of Torque = 0)
First Law of Thermodynamics
Universal Gravitation
Entropy change at constant T
2. At ___________ - weight = friction - so the net force is 0. Thus - the acceleration is 0. So - the speed stays constant at terminal velocity
terminal velocity
Center of Mass - point masses on a line
The strong force: also called the nuclear force
Sinusoidal motion
3. X = Axcos(?xt) = Axcos(2xpxf xt) ? = angular frequency f = frequency
2nd Law of Thermodynamics
Newton's second law (F = ma)
Sinusoidal motion
Potential Energy stored in a Capacitor
4. When something is laying still on a horizontal surface - the normal force is ___________ to the weight.
Bernoulli's Equation
The vector sum
equal and opposite
Capacitors in parallel
5. The direction of instantaneous velocity is _______ to the path at that point Ave speed = distance / time = v = d/t
tangent
Poiseuille's Law
Conservation of linear momentum
Mechanical Energy
6. L = L0 (1 + a? T )
static friction
Linear Expansion
Hooke's Law
acceleration
7. Instantaneous velocity has ________ - instantaneous speed does not.
a direction
terminal velocity
First Law of Thermodynamics
Simple Pendulum
8. Uniformly accelerated motion along a straight line
Relativistic Time Dilation
Average acceleration
Momentum - Impulse
vertical acceleration
9. Mass per unit of volume.?=m/V(unit : kg /m3 )
Density
There are two kind of weightlessness
Heating a Solid - Liquid or Gas
Thin Lens Equation
10. Applies to objects in motion. A key sliding across the table eventually comes to a stop because of kinetic friction.
Energy Released by Nuclear Fission or Fusion Reaction
Kinetic friction
Speed of a Wave on a String
beta (Beta) particle
11. A measure of both the speed and direction of a moving object. V=?x/?t
Newton's first law - inertia
velocity
Constructive interference
constant
12. P = I
Electric Power
Angular Speed vs. Linear Speed
Newton's first law - inertia
Anti node
13. Instantaneous speed equals instantaneous velocity ____________.
Sinusoidal motion
no work is done
Force caused by a magnetic field on a moving charge
in magnitude
14. Voltage created by the combination of movement and a magnetic field. Emf=N(?F/?t)
Destructive interference
For displacements and distances that approach zero - the instantaneous velocity equals
Real weightlessness
Induced Voltage
15. When there is no net gravitational force acting on you. Either you are so far out in space that there's no objects around you for light -years away - or you are between two objects with equal gravitational forces that cancel each other out.
2nd Law of Thermodynamics
Real weightlessness
terminal velocity
Hooke's Law
16. The change in internal energy of a system is ?U = QAdded + WDone On - Qlost - WDone By
0
in magnitude
Lever
2nd Law of Thermodynamics
17. PEGrav = P = mxgxh KELinear = K =
Doppler Effect
Orbiting in space
Mechanical Energy
normal force
18. 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
Capacitors in series
When acceleration is constant and there is no change in direction
Apparent weightlessness
Continuity (fluids)
19. The coefficient of friction is intrinsic to the ________ of the surface and the object - and is determined empirically.
2nd Law of Thermodynamics
material properties
negative
Periodic Waves
20. Centripetal force is due to centripetal acceleration. Centripetal acceleration is due to changes in velocity when going around a circle. The change in velocity is due to a constant change in direction. ?Sometimes a negative sign is used for centripet
Centripetal Force (F=- mv2/r)
Radioactive Decay Rate Law
Spring Force - Work
vector fashion
21. When things are at translational equilibrium - the vector sum of all forces = 0. Things at ______________ either don't move - or is moving at a constant velocity. If an object is accelerating - it's not in equilibrium.
Potential Energy stored in a Capacitor
Electric Power
Centripetal Force (F=- mv2/r)
Translational equilibrium (Sum of Fi = 0)
22. The distance of stretch or squeeze of an elastic material is directly proportional to the applied force F = kxx Potential Energy of a spring W =
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23. Mass / volume (unit : kg /m3 ) ? = m/v
acceleration
velocity and displacement
Ohm's Law
Density
24. Kinetic energy is __________ - so there are no positive / negative signs to worry about.
The strong force: also called the nuclear force
scalar
Instantaneous speed
Law of gravitation (F = Gm1m2/r^2)
25. The angular equivalent of a force - it makes things rotate - have angular acceleration - change angular velocity and direction.
Potential Energy stored in a Capacitor
Torques - lever arms
Equilibrium
same gravitational work
26. DF = dq v(B sin a) = I dl(B sin a)
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27. Vector - has direction - rate of change in displacement.
velocity
Inductors during an increase in current
Ohm's Law
Relativistic Time Dilation
28. N1xsin ?1 = n2xsin ?2
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29. Distance travelled per unit time
Heating a Solid - Liquid or Gas
de Broglie Matter Waves
Lenz's Law
speed
30. a = v^2/r f= mv^2/r cir = 2TT*r xnote that theta is always in radians. To convert degrees to radians - use this formula:
Uniform circular motion
Speed of a Wave on a String
Relativistic Mass Increase
Hooke's Law
31. T=mv^2/L
vertical component
Newton's Second Law and Rotational Inertia
Torque
Speed of a Wave on a String
32. I = Q/t and R = ?l/A
Coulomb's Law
Current and Resistance
Radioactive Decay Rate Law
a direction
33. V = f x? f = 1 / T T = period of wave
Periodic Waves
Momentum
Elastic collisions
scalar
34. (physics) a rate of change of velocity
Newton's Second Law
acceleration
Torque
The displacement for a quarter around the circle (pi/4 radians or 45 degrees) - the displacement
35. Even though they are accelerating toward the Earth - they never crash into the Earth's surface because the Earth is _____ (the surface curves away from the satellite at the same rate as the satellite falls).
Friction - static and kinetic
round
Instantaneous velocity
Three kinds of strain: unit - less ratios
36. If the force is acting in one direction - but the object moves in a perpendicular direction - then...
scalar and a scalar
Bernouilli's Equation
no work is done
4 universal forces
37. A = Aoxe - k t = (1/2n)xA0 (after n half - lives) Where k = (ln 2) / half - life
Flow of Heat through a Solid
Thermodynamics
Radioactive Decay Rate Law
Newton's second law (F = ma)
38. Gravity decreases with the square of the distance. If the distance increases two fold - gravity decreases by a factor of four.
When acceleration is constant and there is no change in direction
Law of gravitation (F = Gm1m2/r^2)
Momentum - Impulse
4 universal forces
39. Xcm = S(mx) / Mtotal
Lenz's Law
Center of Mass - point masses on a line
Electric Power
Magnification
40. The ____________ of g toward the Earth holds true at all times - even when the projectile is traveling up (it's decelerating on its way up - which is the same thing as accelerating down).
Poiseuille's Law
Speed - velocity (average and instantaneous)
vertical acceleration
Buoyant Force - Buoyancy
41. VL = Vcellxe - t / (L / R) I = (Vcell/R)x[ 1 - e - t / (L / R) ] L / R = t = time constant
Hooke's Law
Capacitors in parallel
The strong force: also called the nuclear force
Inductors during an increase in current
42. R = ?xL / Ax ? = resistivity of wire material L = length of the wire Ax = cross - sectional area of the wire
Periodic Waves
Orbiting in space
Mechanical Energy
Resistance of a Wire
43. 'rotational equivalent of force'; a force applied so as to cause an angular acceleration. t = FxLxsin ?
Destructive interference
Heating a Solid - Liquid or Gas
Torque force at Equilibrium
Torque
44. When a source emitting a sound and a detector receiving the sound move relative to each other - the virtual frequency vf' detected is less than (distance increases) or greater (distance decreases) than the actual emitted frequency. f' = f(V
There are two kind of weightlessness
velocity
Doppler Effect
Buoyant Force - Buoyancy
45. FF =
Newton's Second Law
Friction
Friction Force
Newton's second law (F = ma)
46. Beta=sqrt 1- v^2/c^2
Newton's Second Law and Rotational Inertia
Lorentz Transformation Factor
Potential Energy stored in a Capacitor
rotational equilibrium
47. ?. equal to v(k/m) or - 2(pi)(f)
Resistance of a Wire
Angular frequency
Universal Gravitation
the normal component of gravity
48. The acceleration produced by a net force on a body is directly proportional to the magntude of the net force - is in the same direction as the net force - and is inversely proportional to the mass of the body. Fnet = SFExt = mxa
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49. b
acceleration
Projectile Motion
Quadratic Formula
Hooke's Law
50. The resistance encountered when one body is moved in contact with another. FF =
equal and opposite
Entropy change at constant T
Friction
Density