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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. F = qxvxBxsin ?






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






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






4. 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






5. ?S = Q / T (Phase changes only: melting - boiling - freezing - etc)






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






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






8. On Earth - the rate of acceleration is g - which is ______.






9. Applies to objects in motion. A key sliding across the table eventually comes to a stop because of kinetic friction.






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






11. Mass/volume p= m/V






12. F=(p*q)/(p+q) - 1/f=1/p+1/q - f=focal length p=object distance q=image distance






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






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






15. 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.






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






17. 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






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






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






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






21. 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






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






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






24. T=mv^2/L






25. 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.






26. When things are at translational equilibrium - the vector sum of all forces = 0. Things at ______________ either don't move - or is moving at a constant velocity. If an object is accelerating - it's not in equilibrium.






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


28. E=2.3110?


29. E = moxc2






30. Accelerate toward the ground at a constant velocity.






31. 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.






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






33. The acceleration due to gravity is ______ because the force (weight) and mass of the object is constant. However - if you take air resistance into consideration - the acceleration is no longer _______.






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






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


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






37. W = Px?V






38. A hypothetical pendulum suspended by a weightless frictionless thread of constant length. f = 1/ T and T=2p(sqrt L/g)






39. 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.






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






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






42. 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.






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






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






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






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






47. The point of maximum displacement in a standing wave.






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






49. Change in momentum:






50. ?t = ?to / Beta