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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. 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






2. W = Px?V






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






4. Vibration about an equilibrium position in which a restoring force is proportional to the displacement from equilibrium. T=2p(sqrt(m)/(k)) where k = spring constant = 1 / T = 1 / period






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






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






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






8. If the force is acting in one direction - but the object moves in a perpendicular direction - then...






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






10. ET = Ek + Ep and E = mc2






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


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


13. Instantaneous velocity has ________ - instantaneous speed does not.






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






15. SFx = 0 and SFy = 0






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






17. B=






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






19. 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.






20. 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.






21. Operation involving a ___________ always results in a vector.






22. 1. Absolute - uniform motion cannot be detected. 2. No energy or mass transfer can occur at speeds faster than the speed of light






23. 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).






24. 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.






25. 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






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






27. (physics) a rate of change of velocity






28. 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






29. 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






30. P = ?xgxh h = depth of water ? = density of water






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






32. Mass/volume p= m/V






33. 1/R? = 1/R1 + 1/R2 + 1/R3 + etc. **When resistors are in parallel - the voltage drop is equal across the entire combination - i.e. V? = V1 = V2 = V3 = ...**


34. 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 = ...**






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






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






37. P =






38. The 'distance' is the distance from the center of mass between the two objects. Gravity is the _______ of the four universal forces.






39. 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


40. First get the time in the air by the vertical component. Then use the horizontal component's speed x time of flight. (Don't even think about over - analyzing and try to calculate the parabolic path).






41. A measure of both the speed and direction of a moving object. V=?x/?t






42. For the purposes of the MCAT - these are lines. When lines are close together - that's shows a strong field. When lines are far apart - that shows a weak field. Lines / fields have direction too - and that means they are vectors. Things travel parall






43. Real and apparent.






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






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






46. 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.






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






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






49. At ___________ - weight = friction - so the net force is 0. Thus - the acceleration is 0. So - the speed stays constant at terminal velocity






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