Explanation Given data: The rise in the water level is 20 cm. Formula used: Pascal’s law states that pressure is a function of height for a static fluid, which is mathematically expressed as: P g = ρ w g h Here, P g is the gauge pressure in the leg connected to the rubber bulb, ρ w is the density of water, g is the acceleration due to gravity, and h is the rise in the water level in the opposite leg. Explanation: As the bulb is squeezed, the pressure in the leg connected to the bulb increases; previously, there was atmospheric pressure on both sides. However, because of the increase in pressure in the leg connected to the bulb, the water level will rise in the opposite leg to compensate for the pressure difference. Assume that there was atmospheric pressure on both the sides of the tube and that water is an incompressible fluid. Apply Pascal’s law to find out the pressure difference in the legs of the manometer. P g = ρ w g h Substitute 1000 kg/m 3 for ρ w , 9

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ISBN: 9780134605500

Author: ETKINA

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.

Question

Chapter 13, Problem 46P

To determine

The pressure in the rubber bulb after it is squeezed and the water level rises by 20 cm on the opposite side with respect to the one connected to the bulb.

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Chapter 13, Problem 45P

Chapter 13, Problem 47P

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The pressure in the rubber bulb after it is squeezed and the water level rises by 20 cm on the opposite side with respect to the one connected to the bulb.

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The pressure in the rubber bulb after it is squeezed and the water level rises by 20 cm on the opposite side with respect to the one connected to the bulb.

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Chapter 13 Solutions