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






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






3. (physics) a rate of change of velocity






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






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






6. Fo = fs (V






7. 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.






8. Sliding down a frictionless inclined plane involves the __________ as doing a free fall at the same height.






9. Gravity decreases with the square of the distance. If the distance increases two fold - gravity decreases by a factor of four.






10. F = BxAxcos ?






11. Loop Rule: SAround any loop ?Vi = 0 Node Rule: Sat any node Ii = 0


12. N1xsin ?1 = n2xsin ?2


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






14. b






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


16. The speed.






17. Si = 0 at a junction and S?V = 0 in a loop


18. RESISTANCE=VOLTAGE/CURRENT. V = IxR


19. +Net Heat added to the system +Net Work done on the system






20. Instantaneous speed equals instantaneous velocity ____________.






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






22. Friction acts ________ to the plane surface and opposite to the direction of motion. In a non - moving object on an inclined plane: normal component of gravity = normal force; parallel component of gravity = static friction.






23. PEGrav = P = mxgxh KELinear = K =






24. 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






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






26. ET = Ek + Ep and E = mc2






27. 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.






28. The weakness of gravity is reflected in the ____________ - G - which is orders of magnitude smaller than the Coulomb's constant.






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






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






31. Acceleration in the opposite direction.






32. 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.






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






34. Conservation of momentum only - ?Kinetic energy is lost during an inelastic collision - Collisions in everyday life are inelastic to varying extents - When things stick together after a collision






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






36. V2 = rxgxtan ?






37. 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






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






39. Mass / volume (unit : kg /m3 ) ? = m/v






40. The ______ arm consists of a rigid rod and a fulcrum (where the center of rotation occurs). The torque is the same at all positions of the lever arm (both on the same side and on the other side of the fulcrum). ?If you apply a force at a long distanc






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






42. Roughly 10 orders of magnitude weaker than the strong force. Responsible for radioactive decay.






43. The resistance encountered when one body is moved in contact with another. FF =






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






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


46. The hypotenuse of a right - angled triangle with the radius as the other two sides. Using Pythagoras - the displacement is square root of 2r^2. The distance is the arc of 1/4 circumference.






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






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


49. 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.






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