Two bodies in thermal equilibrium can have different pressures. True or False? a) True b) False
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Two bodies in thermal equilibrium can have different pressures. True or False?
a) True
b) False
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- The density of air at 20 degree celcius is 1.204 kg/m3. The density at temperature 100 degree celcius is 0.9467 kg/m3. If an average size hot air balloon envelopes a volume of 2200 m3, how much weight can it lift (including the balloon itself)? a. 5.55 kN b. 11.1 kN c. 20.4 kN d. 26.0 kNGases are composed of particles that expand to completely fill their container. What causes the pressure that a gas exerts on its container? Collisions of particles with the container. ©2021 Iluminate Education TM, Inc.4. An experiment is conducted with a Joule apparatus. The hanging objects descend through a distance of 3.75 m each time. After 30.0 descents, a total of 6.40 kJ has been added to the water. What is the total mass of the hanging objects? in KG
- Question 23 A gas is contained in a vertical, frictionless piston- cylinder device. The piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. A compressed spring above the piston exerts a force of 150 N on the piston. If the atmospheric pressure is 95 kPa, determine the absolute pressure inside the cylinder in kPa.The bulk modulus of water is B = 2.2 x 10⁹ N/m2. What change in pressure AP (in atmospheres) is required to keep water from expanding when it is heated from 18.8 °C to 30.5 °C? Number i eTextbook and Media UnitsA vertical, frictionless piston-cylinder device contains a gas at 600 kPa absolute. The atmospheric pressure outside is 100 kPa absolute. The piston has a diameter of 50 mm. a) Determine the mass of the piston. b) If the mass of the piston is now halved ---- what would be the gauge pressure of the gas?
- The absolute pressure of a gas in an enclosed cylinder on a day is 3.67 A low pressure storm comes upthe conditions in the gas cylinder remain unchanged does the absolute pressure of the gas increase, decrease, or remain the same? What about the gauge pressure ?98 7. V %24 因/ロ 6) f8 E3 9F f5 SNSV 直。 = d psi (Note the units!) %3D poom surface of the oil. (1 psi = 6.895 kPa) Calculate the gauge pressure in psi at 13.6 cm below the %3D sides, a 2.8-kg wooden disk supports a O.5-kg potato. partially filled with oil of density 0.87 × 103 kg/m³. The figure shows a glass cylinder of radius 6.8 cm, Floating freely on top with no oil leaking around the
- An air bubble has a volume of 1.70 cm3 when it is released by a submarine 115 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume the temperature and the number of air molecules in the bubble remain constant during its ascent. ?cm3A gas storage tank has a small leak. The pressure in the tank drops more quickly if the gas is hydrogen or helium than if it is oxygen. Why?What is the value of gas constant? a) 8.314 kJ mol-1K-1 b) 8.314 L atm mol-1K-1 c) 0.0821 L atm mol-1K-1 d) It is equal to the constant in PV/T = constant