Answer:
The best-supported theory of our universe's origin centers on an event known as the big bang. This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient explosive force.
Explanation:
hope this helps tho i don't quite know what you mean
30 + 6 = 36
36/12 = 3
So, it would take it 3 hours to go 12 kms downstream.
Note that we added 30 and 6 because it was going downstream. If it was going upstream, then we would have had to subtract.
Differences:
<u>Reflection</u> is described as the reverting back of light or sound waves in the same medium, when it falls on plane.
<u>Refraction</u> means the shift in direction of the radio waves, when it enters medium with different density.
Comparisons:
<u>Reflection and refraction</u> <em>both</em> change the direction of light and both <em>do not </em>absorb light. All light waves can be reflected and refracted.
Both <u>Reflection and Refraction</u> are phenomenon related with wave motion of sound, and electromagnetic waves, thus including light.
Because glass is not a good heat conductor. What it means is that heat isn't transfered through its structure as quickly as it would with metal, for instance. Because heat can't penetrate glass as quickly, the contents stay at the same temperature for longer.
