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stealth61 [152]
3 years ago
15

Coefficients of friction always involve how many materials? a. 0 b. 1 c. 2 d. 3

Engineering
1 answer:
True [87]3 years ago
5 0

Answer:

Answer is c. 2

Explanation:

Since friction is present at the contact  between 2 materials thus coefficient of friction always involve 2 materials

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Question:

The question is not complete. See the complete question and the answer below.

A well that pumps at a constant rate of 0.5m3/s fully penetrates a confined aquifer of 34 m thickness. After a long period of pumping, near steady state conditions, the measured drawdowns at two observation wells 50m and 100m from the pumping well are 0.9 and 0.4 m respectively. (a) Calculate the hydraulic conductivity and transmissivity of the aquifer (b) estimate the radius of influence of the pumping well, and (c) calculate the expected drawdown in the pumping well if the radius of the well is 0.4m.

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See the attached file for the explanation.

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