Book edition 1st Edition

Author(s) Paul Peter Urone

Pages 1272 pages

ISBN 9781938168000

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Short Answer

Why does flow decrease in your shower when someone flushes the toilet?

After flushing, cold-water rushes to refill the tank causing decrease in pressure drop in the water line of the shower.

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: Concept of Poiseuille’s law.

The Poiseuille’s law defines the resistance of flow. The greater the pressure differential between two points, the greater the flow rate. The discharge through laminar flow in pipe is given by:

\[Q = \frac{{{P_2} - {P_1}}}{R}\]

Here, R is resistance of flow, Q is the discharge, P₁ and P₂ is the pressure at points 1 and 2 resp.

Step 2: Explanation for decrease in shower during flushing of toilet.

The cold water is diverted to refill the tank when the toilet is flushed which causes pressure drop in the water line. The pressure-balancing valve senses the drop-in cold-water pressure which then restricts the hot water pressure. There is drop in water pressure for the period until the toilet bowl is filled back up. During the pressure drop, the water may turn very hot as the valve do not get all the cold water it requires.

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College Physics (Urone)

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Short Answer

Why does flow decrease in your shower when someone flushes the toilet?

Step by Step Solution

Step 1: Concept of Poiseuille’s law.

Step 2: Explanation for decrease in shower during flushing of toilet.

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College Physics (Urone)

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Short Answer

Why does flow decrease in your shower when someone flushes the toilet?

Step by Step Solution

Step 1: Concept of Poiseuille’s law.

Step 2: Explanation for decrease in shower during flushing of toilet.

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