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What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?
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True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.
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We define the specific heat of a material as the energy that must be transferred to 1.0 kg of that m...
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