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tiny-tim — A PF Asteroid on Physics Forums. 25,837 contributions to physics, math and engineering discussions since 2008.

tiny-tim

Science Advisor

Homework Helper

A PF Asteroid From London, UK

Joined: Feb 14, 2008

Last seen: Jun 29, 2016

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Minato_shiki

Mar 31, 2019

Please help me sir , i have an exam next week , https://www.physicsforums.com/threads/derivative-of-unit-step.446405/
i didn't understand that chain role

DrClaude

Please post your question on the relevant forum:
general question: https://www.physicsforums.com/forums/calculus.109/
question about an exercise: https://www.physicsforums.com/forums/calculus-and-beyond-homework.156/

Apr 1, 2019
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john bastian

Sep 20, 2014

tim may i ask a question why the fluid go faster in a narrow tube than a thicker tube?

Likes Reactions: EnglandSP and dumbboy340

dumbboy340

Due to the law of conservation of mass!!amout of flluid passing from a point is always constant with respect to time.if area is constant,amount of fluid will be constant.if area of pipe is less then to catch up with the time the speedof fluid will be fast.

Dec 30, 2014
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