Why is the sky blue??

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

The mini-refrigerator fire was most likely caused by what type of wiring?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z