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1. en.wikipedia.org › wiki › Hubble's_lawHubble's law - Wikipedia

   en.wikipedia.org › wiki › Hubble's_law

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   21 godz. temu · The Hubble constant is most frequently quoted in (km/s)/Mpc, thus giving the speed in km/s of a galaxy 1 megaparsec (3.09 × 10 19 km) away, and its value is about 70 (km/s)/Mpc. However, crossing out units reveals that H 0 is a unit of frequency (SI unit: s −1) and the reciprocal of H 0 is known as the Hubble time. The Hubble constant can ...

2. www.laitimes.com › en › articleSummary of the knowledge points of the second and eighth grade...

   www.laitimes.com › en › article

   21 godz. temu · Summary of physics knowledge points in the second volume of the eighth grade of the People's Education Edition Chapter 7 Force 7.1 Force (F) 1, Definition: Note (1) The generation of a force must have a force object and a force object, and there are both ...