Engineering, 07.03.2020 03:44 trillsmith
A simplified version of the life cycle of grocery sacks follows. Acquisition/ Sack production production Disposal of raw and use materials Recycled sacks In the late 1970s, supermarkets began to replace paper sacks with poly (plastic) sacks. ethylene In the 1980s, a movement to go back to paper arose, primarily inspired by environmental considerations In the 1990s, a countermovement arose, claiming that paper sacks have a greater negative environmental impact than plastic ones
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Engineering, 03.07.2019 15:10
Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.
Answers: 1
Engineering, 04.07.2019 18:10
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
A simplified version of the life cycle of grocery sacks follows. Acquisition/ Sack production produc...
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