Question: 2. Tooth paste: Suppose you are formulating tooth pastes. You want your paste to come out when plastic container is pressed with a force of

2. Tooth paste: Suppose you are formulating tooth pastes. You want

2. Tooth paste: Suppose you are formulating tooth pastes. You want your paste to come out when plastic container is pressed with a force of 1kg.(1kg9.81m/s2=9.81N). The cross sectional area of the tube is 2.75cm2. a) What is the yield stress of the tooth paste if the screwed openening of the tubo has a diameter of 7mm and length 9mm. Tooth pastes are Bingham Plastics. b) The length of the cylindrical segment of tooth paste on the brush indicates which theological property? c) If the tooth paste were not a Bingham plastic but a pseudo plastic (thixotropic) with K=t0 how will n affect your flow. Suppose n=0.66 what will change in the shape and flow behavior of the tooth paste

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