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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. 1e0 (an electron);






2. E=2.3110?


3. A measure of both the speed and direction of a moving object. V=?x/?t






4. B=






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






7. RESISTANCE=VOLTAGE/CURRENT. V = IxR


8. Force equals mass times acceleration. Fnet = SFExt = mxa


9. Ainxvin = Aoutxvout A= Area v = velocity






10. Change in the apparent frequency of a wave as observer and source move toward or away from each other. Toward Away.






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






12. F = BxAxcos ? Force caused by a magnetic field on a moving charge F = qxvxBxsin ?






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






14. Uniformly accelerated motion along a straight line






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






16. Q = mxcx?T (no phase changes!) Q = the heat added c = specific heat. ?T = temperature change - K






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 )






19. Y or S or B = stress / strain stress = F/A






20. KErotational =






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






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






23. Also called fundamental forces: Nuclear - electromagnetic - weak - gravity






24. Satellites orbiting the Earth are in free fall. Their centripetal acceleration equals the acceleration from the Earth's gravity.






25. The speed at an instant (infinitesimal time interval).






26. If the force and the distance applied is in the same direction...






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






28. FF =






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






30. You weigh more on an elevator accelerating up because F=mg + ma - where a is the ______________ of the elevator.






31. Xcm = S(mx) / Mtotal






32. Vector - has direction - rate of change in displacement.






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.






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.






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






36. FF =






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






38. The velocity at an instant (infinitesimal time interval).






39. Acceleration in the opposite direction.






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.






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.






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






45. ?. equal to v(k/m) or - 2(pi)(f)






46. When something is laying still on a horizontal surface - the normal force is ___________ to the weight.






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






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






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






50. Roughly 10 orders of magnitude weaker than the strong force. Responsible for radioactive decay.