Physics, 16.07.2019 23:40 gracebuffum
Aloaded ore car has a mass of 985 kg and rolls on rails with negligible friction. it starts from rest and is pulled up a mine shaft by a cable connected to a winch. the shaft is inclined at 29.5° above the horizontal. the car accelerates uniformly to a speed of 2.20 m/s in 12.0 s and then continues at constant speed.
(a) what power must the winch motor provide when the car is moving at constant speed?
(b) what maximum power must the motor provide? (c) what total energy transfers out of the motor by work by the time the car moves off the end of the track, which is of length 1,250 m?
Answers: 3
Physics, 21.06.2019 18:00
Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.
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Physics, 21.06.2019 19:00
1) sections 1, 2, and 10 are significant primarily because they suggest the likelihood that a) widow wycherly is actually the woman in the full-length portrait. b) dr. heidegger wants to include his guests in an experiment with the water. c) dr. heidegger plans to drink some of the water from the vase and needs witnesses. d) the guests will be asked to witness dr. heidegger's transformation when he drinks the water.
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Physics, 22.06.2019 18:00
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
Answers: 1
Aloaded ore car has a mass of 985 kg and rolls on rails with negligible friction. it starts from res...
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