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Paper 4Theory (Extended)1 marks
The Hubble constant is a key concept in cosmology.
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Understanding the Hubble Constant
The Hubble constant relates the speed of galaxies to their distance from Earth. It is defined by the equation v = H₀d, where v is the velocity of a galaxy, H₀ is the Hubble constant, and d is the distance to the galaxy.
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State the definition of the Hubble constant.
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