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5. HydraulicsBuoyancyMISC 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points PrinciplesPressure

6. In order to calculate pressure exerted on a surface, what quantity is divided by the surface area?

7. force

8. What is the SI unit of pressure?

9. Pascal (Pa)

10. A pressure of 70 N/m 2 equals

11. 70 Pa

12. If the air inside a balloon exerts a force of 1.5 N on an area of 0.5 m 2, what is the pressure inside the balloon?

13. 3 N/m 2

14. The pressure of air at sea level is approximately

15. 101 kPa 1 atm 1.01 x 10 5

16. The hydraulic system of a dump truck is designed to multiply

17. force

18. Piston 1 exerts a pressure of 10 Pa on the fluid in the hydraulic lift. What is the fluid pressure on Piston 2?

19. 10 Pa

20. a chamber in which the pressure of a gas or liquid moves a sliding piston.

21. Cylinder

22. This branch of mechanics is very similar to hydraulics

23. Pneumatics

24. Hydraulics is based on what principle?

25. Pascal’s Principle

26. The upward force acting on the wing of an airplane in flight is called?

27. Lift

28. Even though this principle is the backbone to modern aviation, planes were not around when he discovered his principle in 1738

29. Bernoulli

30. What happens to the pressure as fluid increases in Bernoulli’s principle?

31. Decreases

32. When an airplane is in flight, air travels ___________ above the wing.

33. faster

34. How do birds differ from airplanes in respect to Bernoulli’s principle?

35. Birds can flap their wings to propel them forward and increase the amount of lift

36. The strength of the buoyant force acting on an object in a fluid depends on the object’s

37. volume

38. The buoyant force on an object in a fluid is equal to the weight of the

39. The fluid displaced by the object

40. A ball is floating partially submerged in a liquid. The buoyant force acting on the ball equals the

41. The weight of the ball

42. A cork is floating in salty water. As more salt is added to the water to increase its density, the cork will

43. Float at a higher level

44. Why does a hot-air balloon float?

45. The density of the air inside the balloon is less than the air surrounding the balloon.

46. The pressure of a fluid at a specific depth depends upon what?

47. The type of fluid

48. Where will the greatest increase in pressure occur if you squeeze the middle of an upright, closed soft-drink bottle?

49. Pressure will increase equally everywhere

50. A brick weighs 26 N. Measured underwater, it weighs 11 N. What is the size of the buoyant force exerted by the water on the brick?

51. 15 N

52. Will copper (8.9 g/cm 3 ) float in corn syrup (1.38 g/cm 3 )

53. No

54. What is a torr?

55. A millimeter of mercury

56. Make your wager

57. When determining the how much a force is amplified in a hydraulic system, you use what equation?