Air (k equals 0.032 space W divided by m K comma space P r equals 0.7 ) at 320 oC flows across 4.5-cm-diameter tubes whose surface temperature is 55 oC with a Reynolds number of 8000. The Churchill and Bernstein convective heat transfer correlation for the average Nusselt number in this situation is N u equals fraction numerator 0.62 R e to the power of 0.5 end exponent P r to the power of 0.33 end exponent over denominator open square brackets 1 plus open parentheses 0.4 divided by P r close parentheses to the power of 0.67 end exponent close square brackets to the power of 0.25 end exponent end fraction The average heat flux in kW/m^2 in this case is

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.