Answer:
<h3>C. 6.50 x 10^3</h3>
Explanation:
The satellite revolves around moon due to centripetal force which is provided by gravity in this context so we can equate gravity and centripetal force.
where, m is mass of satellite
M is mass of moon
ω is angular velocity
G is Universal gravitational constant
R is the radius of moon
from the above equation we get ω as,
here M = 7.36 X 10^22
R = 1.738 X 10^6
G =6.67 X 10^-11
T= 6.50 X 10^3 seconds
B. it had to have been in a warm area and then moved there by plate tectonics over time due to the warm-climate plant fossils found there
Explanation:
One evidence that suggests that ancient Antarctica was situated in a different location from today is seen in the warm-climate fossils plants found there.
- Antarctica today occupies the southern polar region of the earth.
- It the coldest region on earth with very extreme of cold.
- From the theory of continental drift proposed as subset of plate tectonics, the continent Antarctica was once a landmass in a tropical region with lush green plants.
- Fossils of palm fronds and seeds of tropical plant species have been unearthed in some sedimentary layers in the continent.
- The scientific explanation to this is that the continent was once up above it's current position.
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Answer:
Subject : jellyfish or any othet sea animal
The islets of Langerhans are the hormone producing structures in the pancreas that manufacture insulin and glucagon
