Answer:
The angular speed is 
.
Explanation:
The law of conservation of angular momentum says that for an isolated system
Now, when the student is at the rim of the platform the moment of inertia of the system is
,
and the angular speed is
.
When the student is 
from the center,the moment of inertia of the system becomes
Thus, from conservation of angular momentum
which is the angular speed when the student is 0.861 meters from the center.
Answer:
ssooeorkgogogoogkrorooror
Explanation:
Answer:
option B
Explanation:
given,
Satellite B has an orbital radius nine times that of satellite A.
R' = 9 R
now, orbital velocity of the satellite A
........(1)
now, orbital velocity of satellite B
from equation 1
hence, the correct answer is option B
An arachnid has eight legs.
Answer:
The atmosphere which contains nitrogen, oxygen, carbon dioxide, and other gases essential for life, contributes to the rainforest climate. The rainforest is hot, humid and helps balance the amount of carbon dioxide in the atmosphere by absorbing it and releasing more oxygen which is important for climate change.
The hydrosphere, which is the combination of various types of water sources and types found in air, in the form of water vapor; water found below the earth's surface and above, also contributes to the rainforest climate. The frequent rainfall dictates the vegetation growth in that area which also creates weather patterns due to the contribution of the atmosphere and the hydrosphere. The hydrosphere is important in the formation of rain. A rainforest of frequent rainfall indicates a large amount of the combination of various types of water sources and types found in a particular area, which release the water back onto the rainforest.
