Answer:
The theremin is considered to be the first electronic musical instrument ever made, a legendary machine. It is also the only instrument in the world that can be played without needing to be touched! The magnetic field is changed by the varying distances between the two hands.
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Answer:
If you are in k12 here is your answer: A,B,C (in alva its a,c,d
Answer:
1. i think is right from my studies
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