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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. When something is laying still on an inclined plane - the normal force and friction force adds up in a _________ to equal the weight.






2. Instantaneous velocity has ________ - instantaneous speed does not.






3. 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 = ...**






4. N1xsin ?1 = n2xsin ?2


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






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






7. P =






8. VL = Vcellxe - t / (L / R) I = (Vcell/R)x[ 1 - e - t / (L / R) ] L / R = t = time constant






9. Ainxvin = Aoutxvout A= Area v = velocity






10. Distance and direction of an object's change in position from the starting point






11. ET = Ek + Ep and E = mc2






12. Gravity decreases with the square of the distance. If the distance increases two fold - gravity decreases by a factor of four.






13. 1/C? = 1/C1 + 1/C2 + 1/C3 + etc. **Voltages sum when capacitors are in series (V? = V1 + V2 + V3 ...)**






14. The direction of instantaneous velocity is _______ to the path at that point Ave speed = distance / time = v = d/t






15. 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


16. The velocity is always less or equal to the speed. The displacement is always less or equal to the distance. Displacement and velocity are vectors. Distance and speed are not.






17. KErotational =






18. The coefficient of friction is intrinsic to the ________ of the surface and the object - and is determined empirically.






19. ?x = Betax?xo






20. P =






21. 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.






22. 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.






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






24. Change in momentum:






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






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






27. F = kxx Potential Energy of a spring W =


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






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






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






31. Fo = fs (V






32. Fx?t = ?(mxv)






33. Interference in which individual displacements on opposite sides of the equilibrium position are added together to form the resultant wave. Must 180 degrees out of phase






34. xSpeed: scalar - no direction - rate of change in distance.






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






36. E= nxhxf where h = Planck's constant






37. 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






38. Whenever something is in the air - it's in a ___ - even when it is being tossed upwards - downwards or at an angle.






39. T = FxLxsin ? Where ? is the angle between F and L; unit: Nm






40. For light: Ep = hxf = hxc / ? = pxc Therefore - momentum: p = h / ? Similarly for particles - p = mxv = h / ? - so the matter wave's wavelength must be ? = h / m v






41. 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.






42. 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.






43. F = qxvxBxsin ?






44. Accelerate toward the ground at a constant velocity.






45. V2 = rxgxtan ?






46. Real and apparent.






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






48. P = ?xgxh h = depth of water ? = density of water






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






50. If the object is not moving - you are dealing with ___________ and it can have any value from zero up to