Air enters a 16-cm-diameter pipe steadily at 200 kPa and 20°C with a velocity of

Explanation:

(a)  We will determine the mass flow rate as follows.

                m =

                    =

                    =

Putting the given values into the above formula as follows.

      m =

          =                          

          = 0.239 kg/s

Hence, the mass flow rate of the inlet/outlet is 0.239 kg/s.

(b)  Now, we will determine the final volume rate as follows.

                        =

                        =

                        = 0.119

And, the final velocity will be determined as follows.

                         =

                         =

                         = 5.92 m/s

Therefore, the volumetric flow rate is 0.119 and velocity rate is 5.92 m/s.

a. energy is created as the log burns b. the compounds that make up the log are converted into fire, heat, and energy. c. as the log burns, the nuclear binding energy of the molecules in the log is released. the nuclear binding energy is transformed into the light and heat of the fire. d. the molecules present in the log are transformed into molecules that contain less energy than the original molecules. the energy difference is the heat of the fire?Explanation: