A supernova 1 billion times more luminous than the Sun is used as a standard candle to measure the distance to a faraway galaxy. From Earth, the supernova appears as bright as the Sun would appear from a distance of 10 kpc. Calculate the distance to the galaxy.

316227.766 kpc

Explanation:

Brightness is given by

where

L = Luminosity of Sun

d = Distance to the Sun

= Distance to the supernova

= Luminosity of supernova = 10L

From the above relation we get

The distance to the galaxy is 316227.766 kpc

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..