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AcaDec

AcaDec. Science w/ Ms. Hendryx 4/2/12. No pressure, no diamonds…. Pressure : Force per unit Area. SI Units of Pressure: N/m 2 , or a Pascal (Pa). Whose heel would you rather have step on your foot?. 50 kg (~100 lb) woman in 1 x 1 cm stilettos. 200 kg (~400 lb) man in 8 x 8 cm boots.

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AcaDec

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  1. AcaDec Science w/ Ms. Hendryx 4/2/12

  2. No pressure, no diamonds…

  3. Pressure: Force per unit Area SI Units of Pressure: N/m2, or a Pascal (Pa)

  4. Whose heel would you rather have step on your foot? 50 kg (~100 lb) woman in 1 x 1 cm stilettos 200 kg (~400 lb) man in 8 x 8 cm boots F = A = P = Man has 4x more force. Woman has 1/64th the area. Woman has 16x more pressure. Ouch.

  5. Bernoulli's principle states that an increase in the speed of the fluid occurs simultaneously with a decrease in pressure

  6. Bernoulli's principle states that an increase in the speed of the fluid occurs simultaneously with a decrease in pressure Same amount of air moving, so it must be faster in the bottom of the cone. Where is the air moving fastest? Where is the pressure lowest? So where is the pressure greatest? Nature abhors a vacuum.

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