Answer:
helium-4 (90%) or tritium (7%).
Explanation:
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Before the skydiver opens the parachute, his velocity would be increasing greatly as much as 9.8 m/s². Opening the parachute would increase the surface area to which air may cause resistance. The skydiver then reaches his terminal velocity.
amnesia is the most common illness used in tv an films
It gets attracted due to electro magnetizing
This is something I have no idea