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






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






3. Total momentum of 2 objects after a collision






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


5. Fx?t = ?(mxv)






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






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






8. 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).






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






10. In an object that accelerates down the inclined plane: parallel component of gravity...






11. When something is laying still on an inclined plane - the normal force and friction force adds up in a _________ to equal the weight.






12. 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.






13. PEGrav = P = mxgxh KELinear = K =






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


15. Also called fundamental forces: Nuclear - electromagnetic - weak - gravity






16. The law of inertia basically states the following: without an external force acting on an object - nothing will change about that object in terms of speed and direction. In the absence of an external force: xSomething at rest will remain at rest - So


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






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






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






20. Every action has an equal and opposite reaction


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






22. W = Px?V






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






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






25. (physics) a rate of change of velocity






26. Induced current flows to create a B- field opposing the change in magnetic flux


27. mv - where m is mass - v is velocity and the symbol for momentum is p. xImpulse = Ft - where F is force and t is the time interval that the force acts.






28. E = moxc2






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






30. P =






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






32. 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).






33. The principle whereby every energy transfer or transformation increases the entropy of the universe. Ordered forms of energy are at least partly converted to heat - and in spontaneous reactions - the free energy of the system also decreases. ?U = QAd






34. 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.






35. 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






36. 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.






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






38. The point of maximum displacement in a standing wave.






39. Motion of a particle fom point A to point B. x = x 0 + v 0 t + 1/2at2 and V






40. N = c / v c = speed of light = 3 E+8 m/s






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






42. Fo = fs (V






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






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






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






46. Voltage created by the combination of movement and a magnetic field. Emf=N(?F/?t)






47. Linear speed = v = rx? = r x angular speed






48. 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






49. SFx = 0 and SFy = 0






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