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1. Explain how the body establishes a pressure gradient for fluid flow.2. Explain the effect that the flow tube radius change had on flow rate. How well did the results compare with yourprediction?3. Describe the effect that radius changes have on the laminar flow of a fluid.4. Why do you think the plot was not linear? (Hint: look at the relationship of the variables in the equation). How well did theresults compare with your prediction?