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
Another question on Physics
Physics, 21.06.2019 15:00
Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.
Answers: 1
Physics, 21.06.2019 22:50
Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object
Answers: 2
Physics, 22.06.2019 17:00
Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?
Answers: 1
Physics, 22.06.2019 18:00
Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7
Answers: 1
You know the right answer?
Aloaded ore car has a mass of 985 kg and rolls on rails with negligible friction. it starts from res...
Questions
Mathematics, 26.01.2021 17:20
Chemistry, 26.01.2021 17:20
Mathematics, 26.01.2021 17:20
Mathematics, 26.01.2021 17:20
Arts, 26.01.2021 17:20
Arts, 26.01.2021 17:20
Social Studies, 26.01.2021 17:20
History, 26.01.2021 17:20
