An analysis of gravitational lensing observations from a deep-field galaxy survey yields an estimated Hubble constant value of 2.38×10−18 s−12.38 \times 10^{-18}\text{ s}^{-1}2.38×10−18 s−1.
What is this value, written to 3 significant figures, in km s−1Mpc−1\text{km s}^{-1}\text{Mpc}^{-1}km s−1Mpc−1?
(Take 1 pc=3.09×1016 m1\text{ pc} = 3.09 \times 10^{16}\text{ m}1 pc=3.09×1016 m)
66 exam-style questions on OCR A A Level Physics Astrophysics and cosmology, covering Stars, Electromagnetic radiation from stars, and Cosmology. Each one has a worked solution and a mark scheme showing where the marks go.