Aparachute jumper weighs 200 pounds (including gear), has a parachute with an area of 200 square feet, and a coefficient of drag of 1.0. what is the highest downward speed (the terminal velocity), in miles per hour, that this jumper can attain? at the terminal velocity the downward force (the weight) is equal to the upward force (the aerodynamic drag force).

What precautions should you take to prevent injuries when dealing with heavy loads?

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]