Which of the following correctly describes a falsifiable hypothesis? one that is unable to stand up to scrutiny and peer review
one that could be shown to be false if some conceivable observation were true
one that cannot be disproved and has supporting evidence
one that is used to disprove certain false but pervasive ideas

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