Physics, 13.11.2019 03:31, semajac11135
The box leaves position x=0 with speed v0. the box is slowed by a constant frictional force until it comes to rest at position x=x1. find ff, the magnitude of the average frictional force that acts on the box. (since you don't know the coefficient of friction, don't include it in your answer.) express the frictional force in terms of m, v0, and x1.
Answers: 1
Physics, 22.06.2019 19:30, Bg88860709
Aspacecraft that renters the earth’s atmosphere drastically slows down. the amount of kinetic energy the spacecraft has as it reenters the earths atmosphere
Answers: 2
Physics, 23.06.2019 03:00, blancademarco1994
A75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a high-efficiency motor that has an efficiency of 95.4 percent. the motor operates 4368 hours a year at a load factor of 0.75. taking the cost of electricity to be $0.12/kwh, determine the amount of energy and money saved as a result of installing the high-efficiency motor instead of the standard motor. also, determine the simple payback period if the pu
Answers: 1
Physics, 23.06.2019 07:30, yeomans410
An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?
Answers: 3
The box leaves position x=0 with speed v0. the box is slowed by a constant frictional force until it...
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