NCERT Exercise 9.1 - Mechanical Properties of Fluids
Question: Explain why (a) blood pressure is greater at the feet than at the brain, (b) atmospheric pressure at 6 km drops to nearly half, (c) hydrostatic pressure is a scalar.
Answer: (a) Greater column height to feet; (b) exponential density decrease; (c) **pressure acts equally in all directions � scalar**.
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