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Evaluation Input Image

A valve in the cylinder shown in <image 1> has a cross-sectional area of 11 cm2 with a pressure of 735 kPa inside the cylinder and 99 kPa outside.How large a force is needed to open the valve?



(A) F=689.4N


(B) F=660.5N


(C) F=699.6N


(D) F=709.6N


Answer with the option's letter from the given choices directly. No punctuation.


Google: Gemini Pro Vision 1.0
mmmu / Energy_and_PowerPublic

A


Expected Answer: C

Difficulty: Hard

Subfield: Thermodynamics


Explanation: Force required to open the valve,$F_{net}=P_{in}\cdot A-P_{out}\cdot A$Where A is the area of valve,$A=11cm^{2}=11\cdot10^{-4}m^{2}$.So,$F_{net}=(735-99)\cdot(11\cdot10^{-4})$

Evaluation

Evaluation ID
871cc380-9e29-4ec5-89ad-1e51b5e6f5b3
Created
February 21, 2024
Raw Output
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