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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. Instantaneous speed equals instantaneous velocity ____________.






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






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






4. PEGrav = P = mxgxh KELinear = K =






5. The force that acts on a mass - It has a magnitude and a direction. It is a vector. Because it is a force - F=ma holds true.






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






7. V2 = rxgxtan ?






8. 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.






9. 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.






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






11. E=2.3110?


12. ?Q / ?t = kxAx?T / L k = thermal conductivity A = area of solid L = thickness of solid






13. ( sin ?1 )/(sin ?2 ) = v1 /v2 = n2 /n1 = ?1 /?2 n = c/v






14. Uniformly accelerated motion along a straight line






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






16. 1e0 (an electron);






17. Total momentum before = total momentum after.






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






19. 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






20. b






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






22. 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.






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






24. FF =






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






26. M = mo / Beta






27. 1/C? = 1/C1 + 1/C2 + 1/C3 + etc. **Voltages sum when capacitors are in series (V? = V1 + V2 + V3 ...)**






28. Roughly 50 orders of magnitude weaker than the strong force. Responsible for weight (not mass!). Also - responsible for planet orbits.






29. Accelerate toward the ground at a constant velocity.






30. Every action has an equal and opposite reaction


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






32. A = Aoxe - k t = (1/2n)xA0 (after n half - lives) Where k = (ln 2) / half - life






33. Total kinetic energy before = total kinetic energy after.






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. Change in momentum:






36. The significance of Newton's first law on equilibrium is: things in equilibrium will remain in equilibrium unless acted on by an external force. Things resist change in momentum because of inertia (try stopping a truck. It's not easy because it resis


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






38. Moving around a circle at constant speed - frequency = How many times the object goes around the circle in one second. Period = time it takes to move around the entire circle.






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






40. The normal force at an inclined plane is equal to the weight __________ of the incline angle (see inclined planes).






41. Distance travelled per unit time






42. Quantity described by magnitude but not direction (time - area - volume)






43. F = BxAxcos ?






44. Real and apparent.






45. ?x = Betax?xo






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






47. Horizontal: x-x?= v?xt + 0 Vertical: y-y? = v?xt +






48. 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).






49. DF = dq v(B sin a) = I dl(B sin a)


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