What is the pressure increase in a fluid in a syringe when a nurse applies a force of 42 N to the syringe's circular piston?

👨🏻‍🏫 學術台物理學

[匿名]

2016-02-24 4:28 pm

The piston has a radius of 1.1 cm.

回答 (1)

andrew

2016-02-24 4:37 pm

Cross sectional area, A
= π × 1.1² cm²
= 3.8 cm²

Force, A
= 42 N

Pressure
= F/A
= 42/3.8 N/cm²
= 11 N/cm²
= 1.1 × 10⁵ N/m²
= 1.1 × 10⁵ Pa

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