I am asked to write a hypothesis and null hypoothesis on an experiment im doing using different color cellophane pieces, solar cells, and a motor fan. Are these considered a hypothesis and null hypothesis? Hypothesis: Placing colored films on the solar cell will have a positive or negative effect on the power output and affect the fan's speed being faster or slower based on the color of the film. Null Hypothesis: Colored films have no effect on the power output of solar cells and fan speeds remain the same.

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.