Mechanical physics: Fluid pressure and string tension
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Please provide direction for the following questions:
A) A 2.8-N force is applies to the plunger of a hypodermic needle. If the diameter of the plunger is 1.3 cm and that of the needle 0.20mm, (a) with what force does the fluid leave the needle? (b) What force on the plunger would be needed to push fluid into a vein where the gauge pressure is 75 mm-Hg? Answer for the instant just before the fluid starts to move.
B) A beaker of water rests on an electronic balance that reads 998.0g. A 2.6-cm-diameter solid copper ball attached to a string is submerged in the water, but does not touch the bottom. What are the tension in the string and the new balance reading?
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Solution Summary
Solution provides the steps and formulas necessary in solving the two problems given.
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