CAIE IGCSE Physics 6.2.3.9 Hubble Constant H0 As Recession Speed Questions

Use this IGCSE Physics objective to use the Hubble constant and recession speed to calculate galaxy distance, supported by examined questions and mark schemes.

Exam points

Use the Hubble constant and recession speed to calculate the distance of a galaxy.

[Maximum number: 2]

A galaxy is approximately $1.2 \times 10^{26} \mathrm{~m}$ from the Earth.

Calculate the speed at which the galaxy is moving away from the Earth.

speed =

$2.6 \times 10^{8} \mathrm{~m} / \mathrm{s}$ $H_{0}=v / d \mathbf{O R}(v=) H_{0} d \mathbf{O R}(v=) 1.2 \times 10^{26} \times 2.2 \times 10^{-18}$

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CAIE IGCSE Physics 6.2.3.9 Hubble Constant H0 As Recession Speed Questions question 1