Question: 2 . The manometer in Figure 2 is used to measure very small changes in pressure of the gas at A . ( a )

2 .

The manometer in Figure

2

is used to measure very small changes in pressure of the gas at A

. (

)

Derive an expression for the pressure P

_

(

)

In room temperature and pressure, what liquid would you use if you wanted it to be as sensetive as possible? Note: A sensetive manometer has a large change in L direction for a small amount of changes in P

_

.

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