Answer:
b. centripetal force pulling at right angles to the path of the satellite
Explanation:
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Answer:
NATIVE AMERICAN
Explanation: They are the first people on the earth which makes sense that they would be first on africa
c. 40,000 K
b. 23,000 degrees C
d. 2,000,000 degrees C
Answer:
Option (C)
Explanation:
The O stars are the hottest of all the stars which have a maximum temperature of approximately 40,000 K. They appear to be bluish in color. The hydrogen present on the surface of this type of stars are fully ionized, due to which it's surface temperature is extremely high. Some of the visible elements are also present such as oxygen, silicon, helium, and nitrogen.
These stars can survive for a period of nearly 10 billion years. These are the main sequence stars with high luminosity.
Thus, the correct answer is option (C).
b. an increase in the overall temperature of the Earth
c. an increase in the number of cold climates
d. no change to global climate
Answer:
B.) an increase in the overall temperature of the Earth
Explanation:
Thought to be because of all the Greenhouse gases/pollution
Answer:
Atmospheric Pressure and Winds belts.
Explanation:
Answer:
Convection cell
Explanation:
for other people who my need it
atoms to 75 percent 40Ar and 40Ca atoms.
How many years old is this rock?
(1) 0.3 10^9 y (3) 2.6 10^9 y
(2) 1.3 10^9 y (4) 3.9 10^9 y
The age of the rock is mathematically given as
t= 2.6 10^9 y
Question Parameter(s):
a ratio of 25 percent 40K
atoms to 75 percent 40Ar and 40Ca atoms.
Generally, the equation for the half lif is mathematically given as
Therefore
t= 2.6 10^9 y
In conclusion, the age of the rock is
t= 2.6 10^9 y
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