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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. PEGrav = P = mxgxh KELinear = K =






2. Ainxvin = Aoutxvout A= Area v = velocity






3. 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






4. ? + ?gh + 1/2 ?v2 = constant


5. ET = Ek + Ep and E = mc2






6. The __________ at a horizontal surface is equal to the weight






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






8. 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






9. b






10. Static friction is always ____ than kinetic friction.






11. P =






12. Gravity is divided into two components on an inclined plane. One component is normal (perpendicular) to the plane surface: FN = mg






13. Periodic frequency resulting from the superposition of two waves that have slightly different frequencies. f(beat) = |f1- f2|






14. I. Linear: strain = ?L / L II. Shear: strain = ?x / L III. Volume: strain = ?V / V






15. L = L0 (1 + a? T )






16. Pushing an object at constant speed up a frictionless inclined plane involves the ___________ as directly lifting the same object to the same height at constant speed.






17. The distance of pulling increases by the same factor that the _______.If the weight of the box is 100 N - you have to pull with a force of 100 N. For every 1 meter you pull - the box goes up 1 meter. When there is one moving pulley - the force needed






18. Accelerate toward the ground at a constant velocity.






19. The resistance encountered when one body is moved in contact with another. FF =






20. Operation involving a __________ may or may not result in a vector (kinetic energy from the square of vector velocity results in scalar energy).






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






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






23. Sum of all torques acting on an object is zero. No net angular acceleration.






24. C = ?xeoxA / d ? = dielectric constant A = area of plates d = distance between plates eo = 8.85 E(-12) F/m






25. For a given mass - its weight on Earth is different from its weight on the _____.






26. Every action has an equal and opposite reaction


27. Back and forth oscillatory motion corresponding to sound. x = Axcos(?xt) = Axcos(2xpxf xt) ? = angular frequency f = frequency






28. P = I






29. The __________ of the projectile velocity is always accelerating toward the Earth at a rate of g.






30. Induced current flows to create a B- field opposing the change in magnetic flux


31. E = moxc2






32. N = c / v c = speed of light = 3 E+8 m/s






33. T = torque = Ixa I = moment of inertia = mxr


34. W = Px?V






35. F=mv^2/R=m?r






36. This is what we 'weightlessness' really means when we see astronauts orbiting in space. The astronauts are falling toward the earth due to gravitational forces (weight) - but they are falling at the same rate as their shuttle - so it appears that the






37. In an object going down the inclined plane at constant velocity: parallel component of gravity...






38. xW = Fdcos? - F is force - d is the distance over which the force is applied - and ? is the angle between the force and distance. xDerived units - sign conventions - It is energy - and the unit is the Joule - Joule = N






39. F=g(m1m2/r^2) G = 6.67 E-11 N m






40. 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 = ...**






41. mv - where m is mass - v is velocity and the symbol for momentum is p. xImpulse = Ft - where F is force and t is the time interval that the force acts.






42. Use the vertical component only- calculate the time it takes for the projectile to hit the ground.






43. I = Q/t and R = ?l/A






44. ?x = Betax?xo






45. The increase in volume of a substance due to an increase in temperature. Linear: ?L = Loxax?T Volume: ?V = VoxBetax?T






46. Q = mxL L = Latent Heat of phase change






47. 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.






48. The change in internal energy of a system is ?U = QAdded + WDone On - Qlost - WDone By






49. Pulleys reduce the force you need to lift an object. The catch - it increases the required pulling distance. xComplex pulleys will have additional ropes that contribute to the pulling of the load (most likely not tested on the MCAT).






50. Logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity) relative to a specified or implied reference level. B (Decibel level of sound) = 10 log ( I / Io ) I = intensity of sound Io = intensity