Question

Among the substances listed, in which one does a beam of light travel at the highest speed?

(1 point)
Glass
Plastic
Air
Water

1 year ago

Answered by Joe Willy

are you sure

1 year ago

Answered by Joe Willy

light isnt a selection in the question

1 year ago

Answered by @~@

a b c or d

1 year ago

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