Physics, 29.05.2020 03:58 kelseyduhhh
A batch of 2-cm-thick stainless-steel plates (k = 21 W/m·K, r = 8000 kg/m3, and cp = 570 J/kg·K) are conveyed through a furnace to be heat treated. The plates enter the furnace at 18°C, and travel a distance of 3 m inside the furnace. The air temperature in the furnace is maintained at 950°C with a convection heat transfer coefficient of 150 W/m2·K. Using an appropriate software, determine how the velocity of the plates affects the temperature of the plates at the end of the heat treatment. Let the velocity of the plates vary from 5 to 60 mm/s, and plot the temperature of the plates at the furnace exit as a function of the velocity
Answers: 1
Physics, 21.06.2019 23:20, marc2007
In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.
Answers: 1
Physics, 22.06.2019 21:20, rosieposie27
Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s
Answers: 3
A batch of 2-cm-thick stainless-steel plates (k = 21 W/m·K, r = 8000 kg/m3, and cp = 570 J/kg·K) are...
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