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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. Motion of a particle fom point A to point B. x = x 0 + v 0 t + 1/2at2 and V
Translational motion
Refraction
speed
Apparent weightlessness
2. Change in momentum:
Impulse
Friction
work is positive
Continuity (fluids)
3. 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
constant
Rotational equilibrium (Sum of Torque = 0)
material properties
When acceleration is constant and there is no change in direction
4. xYou can only directly add vectors if they are in the same direction - To add vectors in different directions - you must add their x - y and z components. The resulting components make up the added vector.
Magnetic Flux
Decibel Scale
universal gravitational constant
Vector addition
5. W = Px?V
Kinetic friction
Magnetic Flux
Hooke's Law
Work done on a gas or by a gas
6. FB = ?xVxg = mDisplaced fluidxg = weightDisplaced fluid ? = density of the fluid V = volume of fluid displaced
Buoyant Force - Buoyancy
one direction as positive and another as negative
Rotational equilibrium (Sum of Torque = 0)
parallel
7. Mass/volume p= m/V
Projectile Motion
Kirchoff's Laws
To calculate how far did the projectile travel
Density
8. V = f x? f = 1 / T T = period of wave
Inductors during an increase in current
Periodic Waves
Snell's Law
vector fashion
9. Uniformly accelerated motion along a straight line
To calculate the time the projectile is in the air
Kirchoff's Laws
Average acceleration
de Broglie Matter Waves
10. L1 = F1
Torque forces
Pressure under Water
Continuity of Fluid Flow
no work is done
11. PxV = nxRxT n = # of moles of gas R = gas law constant = 8.31 J / K mole. - law that states the math relationship of pressure (P) - volume (V) - temperature (T) - the gas constant (R) - and the number of moles of a gas (n); PV=nRT.
Ideal Gas Law
Centripetal Force (F=- mv2/r)
Centripetal Force
Rotational Kinetic Energy
12. 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
2nd Law of Thermodynamics
work is negative
Coulomb's Law
Torque
13. A force that causes rotation. t = FxLxsin ? Where ? is the angle between F and L; unit: Nm
Torque
parallel
Total momentum of 2 objects before a collision
Freely falling bodies
14. The significance of Newton's first law on equilibrium is: things in equilibrium will remain in equilibrium unless acted on by an external force. Things resist change in momentum because of inertia (try stopping a truck. It's not easy because it resis
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15. The direction of instantaneous velocity is _______ to the path at that point Ave speed = distance / time = v = d/t
kinetic friction
tangent
Moon
Gravity
16. Acceleration in the opposite direction.
Deceleration
Torque forces
Newton's Second Law
Resistance of a Wire
17. When the centripetal force is taken away (Such as when the string snaps) - the object will...
> kinetic friction
Doppler Effect
To calculate how far did the projectile travel
fly off in a path tangent to the circle at the point of snap
18. If the object is sliding - then you are dealing with ___________ and it will be constant and equal to
Elastic collisions
kinetic friction
Capacitance of a Capacitor
4 universal forces
19. Voltage created by the combination of movement and a magnetic field. Emf=N(?F/?t)
constant
Induced Voltage
vertical acceleration
scalar
20. F = - kx and W = kx2 /2
Friction Force
Angular Speed vs. Linear Speed
Spring Force - Work
Torque forces
21. Friction always does ___________ because frictional forces always act against the direction of motion.
Energy of a Photon or a Particle
negative work
Momentum - Impulse
To calculate the time the projectile is in the air
22. E = hxf = mxc2 h = Planck's constant = 6.63 E(-34) J sec f = frequency of the photon
Capacitors in series
Current and Resistance
Energy of a Photon or a Particle
Thermodynamics
23. A v = const. and ?Av = const.
universal gravitational constant
Continuity (fluids)
Projectile Motion
Current and Resistance
24. The strongest of all four forces - but it only acts at subatomic distances. It binds nucleons together.
Buoyant Force - Buoyancy
Instantaneous velocity
The strong force: also called the nuclear force
Translational motion
25. FF =
Projectiles
larger
Friction
Current and Resistance
26. Q = mc ? T (MCAT !) and Q = mL
Thermodynamics
Kirchhoff's rules
Three kinds of strain: unit - less ratios
Buoyant Force - Buoyancy
27. The vector sum of the momenta of all the shrapnel from the explosion.
The momentum of a bomb at rest
Projectile Motion
Resistor's in series
Vector addition
28. The average distance - weighted by mass - in a Cartesian coordinate - it is the point obtained by doing a weighted average for all the positions by their respective masses.
Center of mass
same gravitational work
9.8 m/s2
Apparent weightlessness
29. (physics) a rate of change of velocity
Continuity of Fluid Flow
Index of Refraction
Stress and Strain
acceleration
30. Addition of two waves when the crest of one overlaps the crest of another - so that their individual effects add together. The result is a wave of increased amplitude.
Banked Circular Tracks
Newton's first law - inertia
Constructive interference
Elastic collisions
31. Momentum is a vector - so be sure to assign _________________ when adding individual momenta in calculating the total momentum.
Thin Lens Equation
Bernouilli's Equation
one direction as positive and another as negative
Newton's Second Law and Rotational Inertia
32. M = - Di / Do = - i / o = Hi / Ho - Dimensionless value denoted by m given by the equation: m = - i/o - where i is image height and o is object height. A negative m denotes an inverted image - whereas a positive m denotes an upright image.
Vector addition
Magnification
Lenz's Law
Projectiles
33. F = kxx Potential Energy of a spring W =
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34. In an object going down the inclined plane at constant velocity: parallel component of gravity...
Simple Pendulum
= kinetic friction
velocity
Magnetic Field around a wire
35. 1/R? = 1/R1 + 1/R2 + 1/R3 + etc. **When resistors are in parallel - the voltage drop is equal across the entire combination - i.e. V? = V1 = V2 = V3 = ...**
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36. F=mv^2/R=m?r
Sinusoidal motion
Centripetal Force
Moon
4 universal forces
37. B=
in magnitude
Magnetic Field around a wire
Deceleration
Uniform circular motion
38. V2 = rxgxtan ?
Flow of Heat through a Solid
Banked Circular Tracks
beta (Beta) particle
Linear Momentum
39. C? = C1 + C2 + C3 + etc. **When capacitors are in parallel - the voltage drop is equal across the entire combination - i.e. V? = V1 = V2 = V3 = ...**
Force caused by a magnetic field on a moving charge
Lorentz Transformation Factor
Capacitors in parallel
The displacement for a quarter around the circle (pi/4 radians or 45 degrees) - the displacement
40. The normal force at an inclined plane is equal to the weight __________ of the incline angle (see inclined planes).
Bernouilli's Equation
Pressure under Water
times the cosine
Analysis of pulley systems
41. b
Quadratic Formula
weakest
Average acceleration
the normal component of gravity
42. SFx = 0 and SFy = 0
Relativistic Time Dilation
weakest
Kirchhoff's rules
Torque force at Equilibrium
43. Total momentum of 2 objects after a collision
Heating a Solid - Liquid or Gas
Torque
Total momentum of 2 objects before a collision
The momentum of a bomb at rest
44. ? + ?gh + 1/2 ?v2 = constant
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45. An object's mass times its velocity. Measures the amount of motion in a straight line. momentum = p = mxv = mass x velocity momentum is conserved in collisions
2nd Law of Thermodynamics
Orbiting in space
Linear Momentum
Simple Harmonic Motion
46. ?P = 8x?xLxQ/(pxr4) ? = coefficient of viscosity L = length of pipe r = radius of pipe Q = flow rate of fluid
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47. First get the time in the air by the vertical component. Then use the horizontal component's speed x time of flight. (Don't even think about over - analyzing and try to calculate the parabolic path).
Electric Power
Constructive interference
Torque
To calculate how far did the projectile travel
48. Si = 0 at a junction and S?V = 0 in a loop
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49. Use the vertical component only- calculate the time it takes for the projectile to hit the ground.
To calculate the time the projectile is in the air
Buoyant Force - Buoyancy
Relativistic Length Contraction
Friction
50. Applies to objects sitting still. An object can sit still on an inclined plane because of static friction.
Inelastic collisions
Relativistic Length Contraction
Quadratic Formula
Static friction