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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. 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.






2. Distance travelled per unit time






3. b






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






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


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






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






8. 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






9. T=mv^2/L






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. Instantaneous velocity has ________ - instantaneous speed does not.






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






13. 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.






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






15. Instantaneous speed equals instantaneous velocity ____________.






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






17. 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






18. Q = mxcx?T (no phase changes!) Q = the heat added c = specific heat. ?T = temperature change - K






19. FF =






20. R = ?xL / Ax ? = resistivity of wire material L = length of the wire Ax = cross - sectional area of the wire






21. 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






22. F = BxAxcos ?






23. This is what we 'weightlessness' really means when we see astronauts orbiting in space. The astronauts are falling toward the earth due to gravitational forces (weight) - but they are falling at the same rate as their shuttle - so it appears that the






24. P =






25. 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






26. Accelerate toward the ground at a constant velocity.






27. Operation involving a ____________ always results in a scalar.






28. There is no acceleration in the ________. The horizontal component of velocity is constant.






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






30. PEGrav = P = mxgxh KELinear = K =






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






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






33. 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.






34. ?. equal to v(k/m) or - 2(pi)(f)






35. E=2.3110?


36. 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






37. Induced current flows to create a B- field opposing the change in magnetic flux


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






39. B=






40. ?U = QNet + WNet






41. ?x = Betax?xo






42. 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.






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






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






45. xYou can only directly add vectors if they are in the same direction - To add vectors in different directions - you must add their x - y and z components. The resulting components make up the added vector.






46. 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).






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






48. Uniformly accelerated motion along a straight line






49. 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






50. Acceleration in the opposite direction.