Physics

Physics

Problem

Find the pressure increase in the fluid in a syringe when a nurse applies a force of 42.3 N to the syringe's piston of diameter 1.12 cm.
Intuitive explanation

This problem is about Pascal's principle — the idea that pressure applied to a confined fluid spreads uniformly throughout. The key insight is that pressure is force per unit area, so you need to find the cross-sectional area of the piston, then use P=F/AP = F/A to find how much the applied force increases the pressure inside. The larger the piston's area, the smaller the pressure increase for the same force.

Intuitive explanation

This problem is about Pascal's principle — the idea that pressure applied to a confined fluid spreads uniformly throughout. The key insight is that pressure is force per unit area, so you need to find the cross-sectional area of the piston, then use P=F/AP = F/A to find how much the applied force increases the pressure inside. The larger the piston's area, the smaller the pressure increase for the same force.

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