Answer:
Positive
Explanation:
An ideal fluid is on which is incompressible and non-viscous.
In an ideal fluid element when a fluid element moves from a region of high pressure to region of low pressure then the work done on the fluid element is positive because the force acts in the direction from high pressure towards low pressure and displaces the fluid element, so the work-done is positive.
We have: A= F.s
So, A = 22 x 16
A= 352J
Só A is correct answer
Answer:
Like all mammals (including whales and dolphins) narwhals need oxygen. ... Fish use their gills to extract oxygen from the water. But narwhals, like us, use their lungs to breathe.
Explanation:
