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






2. Total momentum of 2 objects after a collision






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






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






5. When the centripetal force is taken away (Such as when the string snaps) - the object will...






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






7. 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






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

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






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






11. 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.






12. 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 = ...**

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






14. PEGrav = P = mxgxh KELinear = K =






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






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






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






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






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






20. b






21. 1e0 (an electron);






22. T=mv^2/L






23. You weigh more on an elevator accelerating up because F=mg + ma - where a is the ______________ of the elevator.






24. 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

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25. Pushing an object at constant speed up a frictionless inclined plane involves the ___________ as directly lifting the same object to the same height at constant speed.






26. 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 = ...**






27. 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.






28. Applies to objects sitting still. An object can sit still on an inclined plane because of static friction.






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






30. KErotational =






31. The velocity at an instant (infinitesimal time interval).






32. 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






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






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






35. Use the vertical component only- calculate the time it takes for the projectile to hit the ground.






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

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37. 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.






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






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






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






41. P = I






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






43. E=2.3110?

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






45. The acceleration due to gravity is ______ because the force (weight) and mass of the object is constant. However - if you take air resistance into consideration - the acceleration is no longer _______.






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






48. 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.






49. 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.






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

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