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When a star is moving away the light waves appear to red blue green yellow
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If you mix chlorine lithium and nickel together which two elements would be the most reactive
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What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons
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Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?
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When a star is moving away the light waves appear to red blue green yellow...
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