A 120-V motor has mechanical power output of2.10hp. It is84.0%efficient in converting power that it takes in by electrical transmission into mechanical power.
(a) Find the current in the motor.
A
(b) Find the energy delivered to the motor by electrical transmission in2.50h of operation.
J
(c) If the electric company charges $0.160/kWh, what does it cost to run the motor for2.50h?
$