Physics, 19.11.2019 03:31, ttangelique
You are designing a simple elevator system for an old warehouse that is being converted to loft apartments. a 22,500-n elevator is to be accelerated upward by connecting it to a counter-weight by means of a light (but strong! ) cable passing over a solid uniform disk-shaped pulley. the cable does not slip where it is in contact with the surface of the pulley. there is no appreciable friction at the axle of the pulley, but its mass is 875 kg and it is 1.50 m in diameter. (a) what mass should the counterweight have so that it will accelerate the elevator upward through 6.75 m in the first 3.00 s, starting from rest? (b) what is the tension in the cable on each side of the pulley?
Answers: 2
Physics, 21.06.2019 20:00, jferdi2005
When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.
Answers: 1
Physics, 22.06.2019 04:40, joneil1952
Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure
Answers: 3
Physics, 22.06.2019 12:00, drivinghydra
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
You are designing a simple elevator system for an old warehouse that is being converted to loft apar...
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