Torque to a bolt located at the origin using a wrench that lies along the positive yy-axis. assume the bolt head is at the origin and the threaded portion of the bolt lies along the negative xx-axis. if you apply a 25 n force at the end of the wrench in the direction − what length of wrench would be required to supply the desired torque? under this force are we tightening or loosening the bolt?

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