A step up transformer has 5 loops on its primary coild and 20 loops on its secondary coil. If the primary coil is supplied with a 120 v 60 hz signal, what is the voltage in the secondary.

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Ответ:

04.06.2023

Physics

$2.537\times 10^{6}\ years$

Explanation:

Distance to Andromeda galaxy

$2.537\times 10^{6}\ ly=2.537\times 10^{6}\times c\times y$

Speed of light is

$c=3\times 10^8$

Time is given by

$t=\dfrac{Distance}{Speed}\\\Rightarrow t=\dfrac{2.537\times 10^{6}\times c\times y}{c}\\\Rightarrow t=2.537\times 10^{6}\ y$

Hence, the light from Andromeda left $2.537\times 10^{6}\ years$ ago

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