Answer:
The discharge rate is 
Explanation:
From the question we are told that
The diameter is 
The head is 
The coefficient of contraction is 
The coefficient of velocity is 
The radius is mathematically evaluated as

substituting values


The area is mathematically represented as

substituting values


The discharge rate is mathematically represented as

substituting values


I really doubt because the universe is supposed to be infinite
Anything less dense than water will float, like oil. Anything more dense than water will sink, like rock.