Physics, 05.07.2019 18:10 janiyahmcgolley
The brakes of an automobile act by forcing brake pads, which have a metal support and a lining, to press against a disk (rotor) attached to the wheel. friction between the pads and disk causes the car to slow down or stop. each wheel has an iron brake disk of mass 15 ibm and two brake pads, each of mass 1 ibm. suppose you are moving at 55 mph when you apply the brakes and bring the car to a rapid halt with insignificant heat transfer from the disk and pads. assume a heat capacity of 0.12 btu/(ibm of) for the disk and pads and estimate the final temperature (of) of the disk and pads if the car is i). a toyota camry of mass 3200 ibm ii). a cadillac escalade of mass 5,900 ibm, and the temperature that day is 75(of)
Answers: 3
Physics, 21.06.2019 20:00
How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?
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Physics, 21.06.2019 22:30
A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain
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Physics, 22.06.2019 22:30
Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.
Answers: 1
The brakes of an automobile act by forcing brake pads, which have a metal support and a lining, to p...
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