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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. RESISTANCE=VOLTAGE/CURRENT. V = IxR


2. Uniformly accelerated motion along a straight line






3. KErotational =






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






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






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






7. W = F d cos? and P = ?W/?t






8. A net force acting on an object will cause that object to accelerate in the direction of the net force. The unit for force is the Newton. Both force and acceleration are vectors because they have a direction.


9. 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.






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






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






12. F = qxvxBxsin ?






13. Static friction is always ____ than kinetic friction.






14. In an object that begins to slip on the inclined plane: parallel component of gravity...






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






16. Force equals mass times acceleration. Fnet = SFExt = mxa


17. 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).






18. 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.






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






20. If the object is sliding - then you are dealing with ___________ and it will be constant and equal to






21. Centripetal force is due to centripetal acceleration. Centripetal acceleration is due to changes in velocity when going around a circle. The change in velocity is due to a constant change in direction. ?Sometimes a negative sign is used for centripet






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






23. A force that causes rotation. t = FxLxsin ? Where ? is the angle between F and L; unit: Nm






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






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






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






27. If the force and the distance applied is in the same direction...






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


29. The coefficient of friction is intrinsic to the ________ of the surface and the object - and is determined empirically.






30. 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.






31. A hypothetical pendulum suspended by a weightless frictionless thread of constant length. f = 1/ T and T=2p(sqrt L/g)






32. On Earth - the rate of acceleration is g - which is ______.






33. Kinetic energy is __________ - so there are no positive / negative signs to worry about.






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






35. ?U = QNet + WNet






36. Acceleration in the opposite direction.






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






38. FF =






39. T = FxLxsin ? Where ? is the angle between F and L; unit: Nm






40. Q = mxL L = Latent Heat of phase change






41. V2 = rxgxtan ?






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






43. Total momentum of 2 objects after a collision






44. 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.






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






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


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






48. ?P = 8x?xLxQ/(pxr4) ? = coefficient of viscosity L = length of pipe r = radius of pipe Q = flow rate of fluid


49. 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.






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