<span>The element with the greatest number of known stable isotopes is tin, with 10 stable isotopes. Including unstable isotopes, mercury, cesium, and barium are each known to have 40 isotopes. Theory predicts however that many unstable isotopes should exist which have not yet been discovered (especially on the neutron-rich side of the line of stability.)
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Answer:
Moment of inertia of Earth about its own axis is given as
Explanation:
Since Earth is considered as solid sphere
So we will have
so we will have
so we have
<span>738.3 seconds (12.3 minutes)
If we assume that Joe's speed is 0.6 m/s in the vertical direction, then the total displacement he must cover is 443 meters in the vertical direction. Now, the formula for average speed is:
average speed = total distance / total time
total time = total distance / average speed
total time = 443/0.6
total time = 738.3 seconds</span>
X rays with the air in the atmosphere, solar radiation is the least powerful