Physics, 13.03.2020 06:02 choiboiqg5755
When running at its operating speed, a 215-V dc motor with an armature whose resistance is 1.20 Ω draws a current of 25.0 A. What is the back emf of the motor when it is operating normally?
Answers: 3
Physics, 21.06.2019 17:30
Plss anybody know how to do this? ? i need the answers from a through d
Answers: 1
Physics, 21.06.2019 22:50
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.
Answers: 1
Physics, 22.06.2019 06:00
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
Answers: 1
Physics, 22.06.2019 09:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
When running at its operating speed, a 215-V dc motor with an armature whose resistance is 1.20 Ω dr...
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