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Explain why a virtual image must always be upright.
1. 0 answers
2. 403 views
We are doing an experiment measuring the diameter of your blind spot.(1)Why is it normally impossible for a person to completely
1. 2 answers
2. 1,064 views
At a concert, would the speed of sound be different for different frequencies? Why or why not?
1. 3 answers
2. 566 views