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PASS Content Standard 3.1

PASS Content Standard 3.1. All energy can be considered to be either kinetic, which is the energy of motion; potential, which depends on relative position; or energy contained by a field, such as electromagnetic waves. Pressure. A force that acts over a certain area. Force. Pressure =.

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PASS Content Standard 3.1

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  1. PASS Content Standard 3.1 All energy can be considered to be either kinetic, which is the energy of motion; potential, which depends on relative position; or energy contained by a field, such as electromagnetic waves.

  2. Pressure A force that acts over a certain area. Force Pressure = Area

  3. Pressure - 2 min

  4. Fluids Matter that is able to flow.

  5. Fluids Exert pressure because of the motion of their particles.

  6. Fluids Exert pressure because of the motion of their particles.

  7. Cartesian Diver What is happening?

  8. Air molecules inside a basketball press against the material. The more air in the ball, the less it will compress and the higher it will bounce. Can you dribble a ball with no air?

  9. Barometers Measure Air Pressure

  10. The pressure exerted by air at sea level is 10.13 N/cm2

  11. Atmospheric pressure is usually reported by the “weatherman” in inches of mercury “Normal” atmospheric pressure is 29.92 in Hg

  12. 29.92 inches of mercury Is that a lot?

  13. 29.92 inches of mercury Is that a lot?

  14. Weather - 27 min

  15. Describe the characteristics of a low pressure air mass

  16. Describe the characteristics of a high pressure air mass

  17. What is a weather "front"?

  18. How does this picture relate to atmospheric pressure?

  19. Buoyancy The force of a fluid that pushes up on an object in a fluid.

  20. Buoyancy If buoyant force is equal to the weight of the object, the object will be suspended inside the fluid.

  21. Buoyancy If buoyant force is greater than the weight of the object, the object will rise in the fluid.

  22. Buoyancy If buoyant force is less than the weight of the object, the object will sink in the fluid.

  23. Archimedes Principle states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object.

  24. Bernoulli's Principle

  25. The pressure in a moving stream of fluid is less than the pressure in the surrounding fluid.

  26. The pressure in a moving stream of fluid is less than the pressure in the surrounding fluid.

  27. The Bernoulli's Principle keeps airplanes in the air.

  28. Bernoulli's Principle

  29. Flight

  30. Flight - 4 min

  31. F o r c e s a c t i n g o n a n a i r p l a n e

  32. T h r u s tf o r w a r d f o r c e p r o d u c e d b y t h e e n g i n e .

  33. D r a g F r i c t i o n a s t h e p l a n e m o v e s t h r o u g h t h e a i r .

  34. L i f t P r o d u c e d b y u n e q u a l a i r p r e s s u r e s o n t h e w i n g s u r f a c e s .

  35. W e i g h t G r a v i t y p u l l i n g t h e p l a n e d o w n .

  36. North Carolina, 1903

  37. The Wright Brothers - 8 min

  38. Reverse Engineering

  39. Reverse Engineering - 12 min

  40. The Physics of Baseball

  41. The bat exerts about 8000 pounds of force on the ball.

  42. Contact between the ball and the bat lasts only about 1/1000 sec.

  43. The ball distorts to about half its original diameter when it contacts the bat.

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