Engineering, 07.04.2020 15:57 kayla114035
A 6000-kg dump truck has a 1500-kg stone block sitting in its bed when the operator accidentally raises the bed to an angle of 30°. At this angle, the cables holding the block in place break so that the block slides down the bed and impacts the tailgate. Neglect the friction between the block and the bed and assume that the truck can roll freely. Determine the speed of the truck and the block immediately before the block hits the tailgate. Assume a plastic impact. The speed of the truck and the block immediately before the block hits the tailgate is m/s and m/s, respectively.
Answers: 1
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
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
Answers: 2
Engineering, 04.07.2019 19:10
When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?
Answers: 2
Engineering, 04.07.2019 19:20
To save energy, the air supply to a 2000 ft office has been shut off overnight and the room temperature has dropped to 40°f. in the morning, the thermostat is reset to 70°f and warm air at 120 f begins to flov in at 200ft'/min. the air is well mixed within the room, and an equal mass flow of air at room temperature (changing with time) is withdrawn through a return duct. the air pressure is nearly 1 atm everywhere. ignoring heat transfer with the surroundings and kinetic and potential energy effects, estimate how long it takes for the room temperature to reach 70°f. plot the room temperature as a function of time.
Answers: 1
A 6000-kg dump truck has a 1500-kg stone block sitting in its bed when the operator accidentally rai...
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