MCAT Physics
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MCAT Physics
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25 Questions

1. Fx?t = ?(mxv)

2. Unlike friction - gravity always acts downwards. Thus - it does not matter what detour you take because sideward motion perpendicular to the gravitational force involves no work.

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

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

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

6. 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 = ...**

7. 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.

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

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

10. M = mo / Beta

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

12. Instantaneous speed equals instantaneous velocity ____________.

13. FF =

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

15. 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

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

17. ?x = Betax?xo

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

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

20. E = moxc2

21. b

22. 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

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

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

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