Let's convert the distance in meters first:
The sound wave travels at speed
So we can use the basic relationship between space, time and velocity to calculate the time it takes for the sound to reach our ears:
Answer:
Janna levin is a cosmologist and professor at physics.
She is an american by race
She was the presenter of Nova feature Black hole Apocalypse and has writtenany science non-fiction books
www.jannalevin.com is her own page where u get her correct info and bio
Answer:
Hydrogen and helium account for nearly all the nuclear matter in today's universe. This is consistent with the standard or "big bang" model. ... Basically , the hydrogen-helium abundance helps us to model the expansion rate of the early universe. If it had been faster, there would be more neutrons and more helium.
Explanation:
Google
Answer:
swimming, cycling, and jogging
Explanation:
