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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. 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






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






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






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






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






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


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






8. A v = const. and ?Av = const.






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. T = torque = Ixa I = moment of inertia = mxr


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






12. L1 = F1






13. V2 = rxgxtan ?






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






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






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






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






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






19. 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






20. PEGrav = P = mxgxh KELinear = K =






21. 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.






22. 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).






23. V = f x? f = 1 / T T = period of wave






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






25. ET = Ek + Ep and E = mc2






26. The distance of stretch or squeeze of an elastic material is directly proportional to the applied force F = kxx Potential Energy of a spring W =


27. Even though they are accelerating toward the Earth - they never crash into the Earth's surface because the Earth is _____ (the surface curves away from the satellite at the same rate as the satellite falls).






28. Mass per unit of volume.?=m/V(unit : kg /m3 )






29. 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.






30. 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.






31. Back and forth oscillatory motion corresponding to sound. x = Axcos(?xt) = Axcos(2xpxf xt) ? = angular frequency f = frequency






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






33. Total momentum of 2 objects after a collision






34. For things being tossed upwards - take all upward motion such as initial velocity as __________. Leave all






35. Uniformly accelerated motion along a straight line






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






37. 'rotational equivalent of force'; a force applied so as to cause an angular acceleration. t = FxLxsin ?






38. 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


39. Ainxvin = Aoutxvout A= Area v = velocity






40. Fo = fs (V






41. The strongest of all four forces - but it only acts at subatomic distances. It binds nucleons together.






42. 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.






43. It makes things accelerate - change velocity or change direction. In the MCAT - it is indicated by an arrow. The direction of the arrow is the direction of the force. The magnitude of the force is often labeled beside the arrow. F=ma - so the unit f






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






45. Beta=sqrt 1- v^2/c^2






46. Acceleration in the opposite direction.






47. FF =






48. Xcm = S(mx) / Mtotal






49. M = mo / Beta






50. When something is in __________ - the vector sum of all forces acting on it = 0. When something is in ____________ - it is either at rest or moving at constant velocity. When something is in ___________ - there is no overall acceleration.