Oxygen enters an insulated 12-cm-diameter pipe with a velocity of 90 m/s. At the pipe entrance, the oxygen is at 240 kPa and 20°C; the exit it is at 200 kPa and 18°C. Calculate the rate at which entropy is generated in the pipe. The rate at which entropy is generated in the pipe is:

answer:

an example of solubility is salt or sugar dissolving in water.

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the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only