Test your basic knowledge |

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






2. 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 = ...**






3. FF =






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






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






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






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






8. 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






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






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






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. F = BxAxcos ? Force caused by a magnetic field on a moving charge F = qxvxBxsin ?






13. 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.






14. Distance travelled per unit time






15. Pulleys reduce the force you need to lift an object. The catch - it increases the required pulling distance. xComplex pulleys will have additional ropes that contribute to the pulling of the load (most likely not tested on the MCAT).






16. 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.






17. Q = mc ? T (MCAT !) and Q = mL






18. P = I






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






20. SFx = 0 and SFy = 0






21. I. Linear: strain = ?L / L II. Shear: strain = ?x / L III. Volume: strain = ?V / V






22. The average distance - weighted by mass - in a Cartesian coordinate - it is the point obtained by doing a weighted average for all the positions by their respective masses.






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






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






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






26. Ainxvin = Aoutxvout A= Area v = velocity






27. 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






28. FF =






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






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






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






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






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


34. 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.






35. F = BxAxcos ?






36. 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.


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






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


39. ?U = QNet + WNet






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






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






42. L = L0 (1 + a? T )






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






44. Vector - has direction - rate of change in displacement.






45. 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.






46. 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.






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






48. The normal force at an inclined plane is equal to the weight __________ of the incline angle (see inclined planes).






49. X = Axcos(?xt) = Axcos(2xpxf xt) ? = angular frequency f = frequency






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