2. Wheel and axle
3.fulcrum
6.wheel and axle (I think) hope this helps!
Answer:
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C. Margaret Floy Washburn
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Answer:
exothermic
Explanation:
An exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.
Answer:
Explanation:
By using relation,
Speed of light = frequency × wavelength (in m)