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A 650 kg elevator startsfrom rest and moves upward for 4.30 swith constant acceleration until it reaches its cruising speed,1.84 m/s.
(a) What is the average power of the elevatormotor during this period?
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(b) What is the average power during an upward cruise with constantspeed?
A laser that produces a spot of light that is 1.20 mm in diameter is shone perpendicularly on the center of a thin, what is the power of the laser
It was revealed that 120 people had only 1 admission, 81 had 2 admissions, 48 had 3 admissions, 18 had 4 admissions, 18 had 5 admissions, and 15 had 6 admissions or more admissions. Does the data support the mayor's claim? Show the calculations or..
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If the pump at one end of the hose and the nozzle at the other end are at the same height, and if the pressure at the nozzle is 1 atm, what is the pressure at the pump
At a particular instant an electron is traveling in the +y direction, with speed 7105 m/s. find the magnitude of the magnetic force on the electron
child whose mass is 30 kg sits on a merry-go-round at a distance of 2 m from the center. What is the magnitude of the net force (in Newton) acting on the child?
A person slowly lowers a 3.6 Kg crab trap over the side of a dock, What torque does the trap exert about the person's shoulder
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 115 km and with a period of 49.0 h. Find the escape velocity from the asteroid
You are given a spherical mirror and wish to determine its properties. You place an object on its axis, Find the mirror\'s focal length
A 3.10-m-long, 340kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction
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