Test your basic knowledge |

Everyday Physics

Subjects : science, literacy
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. Sounds above 20 -000 Hz






2. If the CG is above the edge - the object will not fall






3. Equals total momentum after collision






4. T^4






5. Current x voltage energy/time (joules per second)






6. 1 / period (time)






7. Tube cross section area A - flow speed u vfr= u x A (m/s x m^2)






8. A disturbance that propagates through a medium






9. The force that brings a system back to equilibrium






10. A disturbance that propagates through a medium






11. Fluid flow velocity=u - fluid density=p (rho) - fluid pressure=P P +

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12. Work done / heat in






13. 9/5T(C)+32






14. 1 -000 kg/m^3






15. Fbottom-Ftop=mg=(density x vol) x g






16.






17. Rod with forces applied at opposite ends in opposite directions






18. Z+n






19. Sounds above 20 -000 Hz






20. C / f






21. Heat Q= mass of sample x specific heat x temp change






22. The sum of the energy of all the molecules in the system






23. The effectiveness of a material in conducting heat






24. Decreases






25. T(C) +273






26. Why things move






27. The energy that flows from one system to another because of their temperature difference.






28. Are wider at the base (which lowers their center of gravity)






29. Time required to complete one cycle






30. Maximum displacement from equilibrium






31. V1 x A1=v2 x A2






32. Equals total momentum after collision






33. The heat transfer by electromagnetic waves - thermal light waves






34. Shows in 1905 that newtons laws were not valid for objects moving with speeds near the speed of light.






35. Kg/m^3






36. Because nothing stops it






37. You can't get more work out than the energy you put in






38. The level stays the same






39. Not easy to knock over






40. Time= the square root of 2 x height / acceleration due to gravity






41. 18600 miles/sec






42. Believed that the natural state of objects was to be at rest






43. If energy is transferred and the internal energy of system B decreases by some amount then the internal energy of system A must incrase by the same amount.






44. The sum of the energy of all the molecules in the system






45. Wrote Principia in 1687. Made the 3 laws of mechanics and law of gravity. He also invented calculus.






46. The amount of heat that is required to raise the temperature of one g of a substance by 1 degree C.






47. 2p x square root L/g






48. 2p x square root L/g






49. The efficiency with which an object emits thermal radiation. Is a number between 0 and 1. A good emitter has an e close to 1.






50. T(C) +273