use one of Newton's laws to explain how we know a force must be acting between the sun and the planets

How have the competing explanations' experiments on atoms affected the development of the atomic model?

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The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.