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damaskus [11]
4 years ago
11

A closed loop piping system has 50 ft of water (149.5 kPa) pipe friction loss, and a vertical height of 20 ft (6.1 m). What is t

he pump head pressure required related to this vertical rise? A. O ft of water (0 Pa) B. 20 ft of water (59.8 kPa) C. 70 ft of water (209.2 kPa)
Engineering
1 answer:
dexar [7]4 years ago
7 0

Answer:

C. 70 ft of water (209.2 kPa)

Explanation:

the formula for this problem is:

pump head pressure = pipe friction loss + vertical height

pump head pressure = 50+20

pump head pressure = 70 ft

converting to a kPa answer we have...

pump head pressure = (70ft*149.5kPa) /50 ft

 pump head pressure = = 209.3Kpa

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Answer:

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A budding electronics hobbyist wants to make a simple 1.0-nF capacitor for tuning her crystal radio, using two sheets of aluminu
bazaltina [42]

Answer:

a. 8 sheets of paper is needed between her plates to get the proper capacitance

b. Area of Aluminum Foil needed = 0.45m²

c. To keep a 1.0-nF, a larger area of Teflon is required.

Explanation:

a.

First, we need to calculate the distance between two plates.

This is given by

d = Kε0A/C

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A = Area = 22 * 28 = 616cm² = 0.0616m²

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d = 1.64mm

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b.

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This means that if she used a Teflon instead, the area will be larger.

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