than the objects weight when not cornstarch and water. When stress submerged in the fluid. is applied to a mixture of cornstarch 5. A fluid exerts pressure in all and water it exhibits properties of a directions. solid. What happens to the mixture 6. Pressure is defined as a force when it is disturbed at certain per unit area. frequencies? 7. The force due to fluid pressure To produce effects that have to be is exerted normal (perpendicular) witnessed to be believed, you will to any surface at the boundary of need a function generator, an the fluid. amplifier, a subwoofer and a dish or 8. Energy contained in a fluid is pie tin containing a mixture of related to its pressure, speed cornstarch and water (Oobleck). and depth. You may wish to begin with a 9. Bernoulli’s Principle is based mixture of two parts cornstarch and upon the conservation of energy one part water. Support the and mass for a system. container containing the Oobleck 10. The faster a fluid is flowing over the top of the subwoofer. Begin parallel to a surface, the lower your experimentation with a 50 Hz the fluid pressure is against that signal and adjust until fingers of Oobleck begin to rise from the surface. surface of the liquid. Describe what you observe during the acceleration of Oobleck with sound. Standard 1- Mechanics -1 week
than the objects weight when not submerged in the fluid. 5. A fluid exerts pressure in all directions. 6. Pressure is defined as a force per unit area. 7. The force due to fluid pressure is exerted normal (perpendicular) to any surface at the boundary of the fluid. 8. Energy contained in a fluid is related to its pressure, speed and depth. 9. Bernoulli’s Principle is based upon the conservation of energy and mass for a system. 10. The faster a fluid is flowing parallel to a surface, the lower the fluid pressure is against that surface. cornstarch and water. When stress is applied to a mixture of cornstarch and water it exhibits properties of a solid. What happens to the mixture when it is disturbed at certain frequencies? To produce effects that have to be witnessed to be believed, you will need a function generator, an amplifier, a subwoofer and a dish or pie tin containing a mixture of cornstarch and water (Oobleck). You may wish to begin with a mixture of two parts cornstarch and one part water. Support the container containing the Oobleck over the top of the subwoofer. Begin your experimentation with a 50 Hz signal and adjust until fingers of Oobleck begin to rise from the surface of the liquid. Describe what you observe during the acceleration of Oobleck with sound. Standard 1- Mechanics -1 week
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