Hey can anyone help me out in dis pls

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?

What is the most useful equation for electric power?

If a balloon is taken outside on a very cold day, what will occur?