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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 name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?