The apparent brightness is defined by how much light we get pretty much. The formula is:
This takes into account that the light is spreading out to a sphere that has the surface given by 4πd^2.
We have that d=20 ly and 1 ly is 9.46*10^12 km or 9.46*10^15m.
Hence, d=20*9.46*10^15=189.2 *10^15 m
Now, we can substitute the d value and calculate that L=<span>8.45184*
W/m^2</span>
Answer:
Option (C)
Explanation:
San Andreas is a prominent example of a transform fault, in which the plates namely the Pacific Plate and the North American plate slide past each other. The movement of the associated plates in this fault is in the right lateral, strike-slip. With the continuous and rapid movement of both the plates in its respective direction, the west side of the fault would get detached from the fault zone and lead to the formation of an island. The movement of the plates along this fault is responsible for the occurrence of shallow focus tremendous earthquakes.
Thus, the correct answer is option (C).
Answer:
little rainfall
Mesopotamians depended on the annual flooding of Tigris and Euphrates rivers
this was similar to the Egyptians
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<span>A low-pressure system is located between the two stations.</span>
Answer:
loss of volatiles to the atmosphere
Explanation:
volatiles are the group of chemical elements and chemical compounds with low boiling points that are associated with a planet's or moon's crust or atmosphere. Examples include nitrogen, water, carbon dioxide, ammonia, hydrogen, etc.
Volatiles were accreted throughout the Earth’s formation, but Earth’s early accretion history was volatile poor.
