1.The effect that water resistance has on a swimmer is that it 2.One force is seen as positive and the other as negative if

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

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Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat