5- Air flows at 120 C in a thin-wall stainless-steel tube with h=65 W/m2.•C. The inside diameter of the tube is 2.5 cm and the wall thickness is 0.4 mm. k =18 W/m• steel. The tube is exposed to an environment with h=6.5 W/m2.•C and TO =15 C. Calculate the overall heat-transfer coefficient and the heat loss per meter of length. What thickness of an insulation having k =40 mW/m • loss by 90 percent?. Answ(q=220W) °C for the °C should be added to reduce the heat

Handwriting not allow please And give me complete answer

hints: The flask will be filled with water (at a constant rate of 500 gallons per minute). It will take me exactly 10 minutes to escape from the chains. The diameter of the tank at 1 foot intervals. I am 5 feet 9 inches tall, and I'm pretty skinny so that you can ignore both my volume and the volume of the stool in your analysis. A gallon is equal to 0.13368 cubic feet.  You can think of the volume and the height of the water as functions of time. You can easily find an expression for V (t), and then use your expression for volume in terms of height to solve for h(t). after 10 minutes amount of water in the tank=66.84 ft3 t=69.3 minutes h(t)=e66.84t/100pi  -1 h(10)=e66.84(10)/100pi  -1=7.39 ft  Height of stool=1.64 ft Height of water in the tank=7.39 ft Questions: show work How fast is the water rising?  I would like to know how long I will have to hold my breath during the last part of the stunt.

I need help solving problems 10, 11, and 12 pertaining to the print provided.