Engineering, 21.09.2020 07:01 kammie89
A parachute designer is task with designing a round parachute for a
human that weighs 160 lbs. The user wants to descend at a rate of 4.5
meters per second. Given that the coefficient of drag is .75 and the
air density is 1.22 kilograms per cubic meter. What is the area in
meters squared of the parachute that the designer will have to
construct?
Answers: 3
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An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
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Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
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An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
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A parachute designer is task with designing a round parachute for a
human that weighs 160 lbs. The...
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