Would the law of conservation of energy in a simple pendulum be sufficient in proving the law?​

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

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Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: