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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. Total momentum of 2 objects after a collision






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






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






4. 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






5. SFx = 0 and SFy = 0






6. Conservation of both momentum and kinetic energy - e.g. if you drop a ball and the ball bounces back to its original height






7. Are free falling bodies.






8. KErotational =






9. Uniformly accelerated motion along a straight line






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






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


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






13. (physics) a rate of change of velocity






14. The __________ at a horizontal surface is equal to the weight






15. Instantaneous speed equals instantaneous velocity ____________.






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






17. P =






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






19. The __________ of the projectile velocity is always accelerating toward the Earth at a rate of g.






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






21. 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






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






23. When something is in __________ - the vector sum of all forces acting on it = 0. When something is in ____________ - it is either at rest or moving at constant velocity. When something is in ___________ - there is no overall acceleration.






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






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






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






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






28. Total kinetic energy before = total kinetic energy after.






29. 1/C? = 1/C1 + 1/C2 + 1/C3 + etc. **Voltages sum when capacitors are in series (V? = V1 + V2 + V3 ...)**






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






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






32. PxV = nxRxT n = # of moles of gas R = gas law constant = 8.31 J / K mole. - law that states the math relationship of pressure (P) - volume (V) - temperature (T) - the gas constant (R) - and the number of moles of a gas (n); PV=nRT.






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






34. 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.






35. PEGrav = P = mxgxh KELinear = K =






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


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






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






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






40. 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.


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


42. 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






43. P = I






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






45. The speed at an instant (infinitesimal time interval).






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


47. The ____________ of g toward the Earth holds true at all times - even when the projectile is traveling up (it's decelerating on its way up - which is the same thing as accelerating down).






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






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. Applies to objects in motion. A key sliding across the table eventually comes to a stop because of kinetic friction.