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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. 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






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






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






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






5. 1e0 (an electron);






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






7. Fo = fs (V






8. Instantaneous speed equals instantaneous velocity ____________.






9. 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.






10. 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 = ...**






11. Accelerate toward the ground at a constant velocity.






12. 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.






13. The angular equivalent of a force - it makes things rotate - have angular acceleration - change angular velocity and direction.






14. L1 = F1






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






16. ?U = QNet + WNet






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






18. When things are at rotational equilibrium - there the sum of all torques = 0.






19. The ____________ of g toward the Earth holds true at all times - even when the projectile is traveling up (it's decelerating on its way up - which is the same thing as accelerating down).






20. P + ?xgxh +

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21. Fx?t = ?(mxv)






22. Linear speed = v = rx? = r x angular speed






23. Total momentum before = total momentum after.






24. A force that is always in the direction to impede motion xLike any other force - friction is a vector. However - its direction is easy because it's always opposite to motion.






25. a = v^2/r f= mv^2/r cir = 2TT*r xnote that theta is always in radians. To convert degrees to radians - use this formula:






26. Every action has an equal and opposite reaction

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27. 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.






28. 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

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






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






31. T=mv^2/L






32. 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).






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






34. E = moxc2






35. V2 = rxgxtan ?






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






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






38. 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.






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






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






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






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






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






44. ?t = ?to / Beta






45. I = F ?t = ?M and M=mv






46. Static friction is always ____ than kinetic friction.






47. If the force and the distance applied is in opposite directions...






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






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






50. FF =