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MCAT Physics

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






2. Change in momentum:






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






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.






5. W = Px?V






6. FB = ?xVxg = mDisplaced fluidxg = weightDisplaced fluid ? = density of the fluid V = volume of fluid displaced






7. Mass/volume p= m/V






8. V = f x? f = 1 / T T = period of wave






9. Uniformly accelerated motion along a straight line






10. L1 = F1






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.






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






13. A force that causes rotation. t = FxLxsin ? Where ? is the angle between F and L; unit: Nm






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






16. Acceleration in the opposite direction.






17. When the centripetal force is taken away (Such as when the string snaps) - the object will...






18. If the object is sliding - then you are dealing with ___________ and it will be constant and equal to






19. Voltage created by the combination of movement and a magnetic field. Emf=N(?F/?t)






20. F = - kx and W = kx2 /2






21. Friction always does ___________ because frictional forces always act against the direction of motion.






22. E = hxf = mxc2 h = Planck's constant = 6.63 E(-34) J sec f = frequency of the photon






23. A v = const. and ?Av = const.






24. The strongest of all four forces - but it only acts at subatomic distances. It binds nucleons together.






25. FF =






26. Q = mc ? T (MCAT !) and Q = mL






27. The vector sum of the momenta of all the shrapnel from the explosion.






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.






29. (physics) a rate of change of velocity






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.






31. Momentum is a vector - so be sure to assign _________________ when adding individual momenta in calculating the total momentum.






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.






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...






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






37. B=






38. V2 = rxgxtan ?






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 = ...**






40. The normal force at an inclined plane is equal to the weight __________ of the incline angle (see inclined planes).






41. b






42. SFx = 0 and SFy = 0






43. Total momentum of 2 objects after a collision






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






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).






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.






50. Applies to objects sitting still. An object can sit still on an inclined plane because of static friction.