Metal detectors are designed to detect all metals. However, many modern detectors have the ability to discriminate out metals of your choosing. You are basically setting the detector to remain silent when passing over the metals you don't want.
Only if the mercury is in large concentrated amounts.
The verb for detection is detect.Other verbs are detects, detecting and detected.Some examples are:"I detect a foul smell in the air"."He detects something"."My metal detector is detecting something"."As usual, the detector only detected junk".
Since gold is a metal (precious) you can of course detect it with a metal detector. But only if it isn't tuned to ignore gold. since every metal has a different phase response metal detectors with discriminators can be tuned to ignore certain metals.
Only if you swallow it.
There is a device called a radar detector, but it will only detect a radar signal, not police in general.
In general, you can't get metal through metal detectors. Only the smallest bits of metal will not cause a metal detector to alarm. If the sensitivity of the detector is set too high, it may be possible to get a small piece of metal past the detector, but that is something that cannot be counted on.
Metal detectors are different and my main advice would be to look into the manual of the metal detector you purchased. Sometimes there are settings where you can configure your detector to only respond to certain metal characteristics. If you got a really basic metal detector one of the prime methods is to simply investigate by digging up the object in question.
No, the RMR-C430-6 will only detect radar in the direction it is facing.
It takes some strong gauss to wipe a credit card. Most metal detectors only detect ferrous materials they do not emit much gauss as they only need to detect a distrubance in the gauss lines to give you a reading on the detetctor. So the answer is no. You also should not be able to FIND credit cards with a metal detector - let alone mess with the magnetic strip on them.
In such smoke detector an analog address is given to smoke detetctor which can be directly read at the fire alarm panel.
You can't disarm them, only go by them when they are turned off. You can detect when they turn off with your laser detector goggles from the 3rd spy.
Find Johnny and ask him for his. He will let you borrow it only if you bring him back his compass which the monkeys stole. Go to the Primate Research Center and win it back by playing a game. Bring the compass to Johnny and you get the metal detector.