mass of 10 cc piston: 16 g mass of 50 cc piston: 60.6 g diameter of 10 cc piston

ID: 2263054 • Letter: M

Question

mass of 10 cc piston: 16 g

mass of 50 cc piston: 60.6 g

diameter of 10 cc piston: 14.7 mm

diameter of 50 cc piston: 28.0 mm

Raiise piston A so it reads about 7 cc and place the large rubber stopper into

the top of syringe B. The piston is not in syringe B at this time. See Figure 4.

Notice that the piston in the 10 cc syringe remains suspended near the 7 cc level,

even though the force of gravity is pulling it down. The force of gravity is offset

by the force due to the air trapped in the syringes. This force is equal to the

pressure of the air in the piston times the cross-sectional area of the piston.

Prediction 2-1:

Suppose you were to place a 50 g mass on piston A. You calculated in

your pre-lab the predicted pressure measured by sensor B. Dont forget the mass of the

piston. Write here the pressure you calculated:

Predicted pressure with only piston: _______________ kPa

Predicted pressure with piston and 50 g mass: _______________ kPa

Predicted pressure with only piston: 9.248*10^-4 kPa

Predicted pressure with piston and 50g mass : 3.815*10^-3kPa

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