Physics, 07.03.2020 01:10 nataliem02
A box rests on top of a flat bed truck. The box has a mass of m = 15 kg. The coefficient of static friction between the box and truck is μs = 0.83 and the coefficient of kinetic friction between the box and truck is μk = 0.64. a) The truck accelerates from rest to vf = 15 m/s in t = 14 s (which is slow enough that the box will not slide). What is the acceleration of the box? b) In the previous situation, what is the frictional force the truck exerts on the box? What is the maximum acceleration the truck can have before the box begins to slide? c) With the box still on the truck, the truck attains its maximum velocity. As the truck comes to a stop at the next stop light, what is the magnitude of the maximum deceleration the truck can have without the box sliding?
Answers: 3
Physics, 21.06.2019 14:40, shay68596
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.
Answers: 3
Physics, 22.06.2019 04:30, icantspeakengles
In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.
Answers: 1
A box rests on top of a flat bed truck. The box has a mass of m = 15 kg. The coefficient of static f...
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