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kompoz [17]
3 years ago
12

The electric eye that prevents an elevator door from closing when you are in the doorway relies upon which physics principle?

Physics
2 answers:
denis-greek [22]3 years ago
5 0
Just took the test as well that dude is right.. lol I rested my grade in your hands and I got an A.. for more help with that test all answers on here are 100% correct: https://quizlet.com/212791759/1007-unit-10-test-part-1-flash-cards/ 
goblinko [34]3 years ago
3 0
It's Photoelectric Effect, I just a test with this same question. I am not good for explaining exactly how, but I was right.
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