In class we demonstrated a method of measuring the pressure within an enclosed sphere. It consisted of a large-volume sphere which was connected via a narrow tube to a 'U-shaped' tube which was filled with a incompressible liquid of density p = 1000. One end of the U-shaped tube was open to the atmosphere. The top of the liquid was a distance x above its lowest point where it is exposed to the atmosphere, and y above the lowest point on the side connected to the sphere. This is illustrated below: 5. Assuming that x = 0.9m, y = 0.6m, and the atmospheric pressure is 1.01 x 105 Pa, what is the air pressure inside the sphere? (a) 0.95 x 105 Pa (b) 0.98 x 105 Pa (c) ***1.04 x 105 Pa (d) 1.07 x 105 Pa (e) 1.10 x 10° Pa 6. Given that the temperature of the gas in the sphere is 90°C and that there are 0.15 moles of the gas, what is the volume of the sphere? (a) 1.1 x 10-3m3 (b) 1.2 x 10-3m³ (c) 4.2 × 10-3m³ (d) ***4.4 x 10-3m³ (e) 4.7 x 10-2m3 7. Suppose some energy Q was added as heat to the gas during a constant volume process. What expression gives the change in the quantity x-y in terms of Q? (a) A(xy) = Re (b) A(xy) QRC (c) A(xy) = pg Qge (d) A(x-y) QpC Vg (e) ***A(xy) = QR pgCV
In class we demonstrated a method of measuring the pressure within an enclosed sphere. It consisted of a large-volume sphere which was connected via a narrow tube to a 'U-shaped' tube which was filled with a incompressible liquid of density p = 1000. One end of the U-shaped tube was open to the atmosphere. The top of the liquid was a distance x above its lowest point where it is exposed to the atmosphere, and y above the lowest point on the side connected to the sphere. This is illustrated below: 5. Assuming that x = 0.9m, y = 0.6m, and the atmospheric pressure is 1.01 x 105 Pa, what is the air pressure inside the sphere? (a) 0.95 x 105 Pa (b) 0.98 x 105 Pa (c) ***1.04 x 105 Pa (d) 1.07 x 105 Pa (e) 1.10 x 10° Pa 6. Given that the temperature of the gas in the sphere is 90°C and that there are 0.15 moles of the gas, what is the volume of the sphere? (a) 1.1 x 10-3m3 (b) 1.2 x 10-3m³ (c) 4.2 × 10-3m³ (d) ***4.4 x 10-3m³ (e) 4.7 x 10-2m3 7. Suppose some energy Q was added as heat to the gas during a constant volume process. What expression gives the change in the quantity x-y in terms of Q? (a) A(xy) = Re (b) A(xy) QRC (c) A(xy) = pg Qge (d) A(x-y) QpC Vg (e) ***A(xy) = QR pgCV
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Transcribed Image Text:In class we demonstrated a method of measuring the pressure within an
enclosed sphere. It consisted of a large-volume sphere which was connected
via a narrow tube to a 'U-shaped' tube which was filled with a incompressible
liquid of density p = 1000. One end of the U-shaped tube was open to
the atmosphere. The top of the liquid was a distance x above its lowest
point where it is exposed to the atmosphere, and y above the lowest point
on the side connected to the sphere.
This is illustrated below:
5. Assuming that x = 0.9m, y = 0.6m, and the atmospheric pressure is
1.01 x 105 Pa, what is the air pressure inside the sphere?
(a) 0.95 x 105 Pa
(b) 0.98 x 105 Pa
(c) ***1.04 x 105 Pa
(d) 1.07 x 105 Pa
(e) 1.10 x 10° Pa
6. Given that the temperature of the gas in the sphere is 90°C and that
there are 0.15 moles of the gas, what is the volume of the sphere?
(a) 1.1 x 10-3m3
(b) 1.2 x 10-3m³
(c) 4.2 × 10-3m³
(d) ***4.4 x 10-3m³
(e) 4.7 x 10-2m3
7. Suppose some energy Q was added as heat to the gas during a constant
volume process. What expression gives the change in the quantity x-y
in terms of Q?
(a) A(xy) = Re
(b) A(xy) QRC
(c) A(xy) =
pg
Qge
(d) A(x-y) QpC
Vg
(e) ***A(xy) =
QR
pgCV
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