(Answered) 1 many stoplights now have a sensing system based on

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1. Many stoplights now have a sensing system based on inductance to determine if a car is waiting at a red light. If that is the case, the light is then switched to green how does the system work.

2. What particles are being accelerated in a particle accelerator and how are they being accelerated, what their target is, how the particles are detected and what sub-atomic particles have been discovered at the site.

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