Hot air (k = 0.035 w/m-k) at an average temperature of 120oc flows through a 4 m long duct at 10 m/s. the tube has inside dimensions of 40 mm x 200 mm, surface temperature of 20oc, and the nussalt number is 89. what is the rate of heat transfer from the air to the tube?

What are the three ways that an object can accelerate

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d