A spherical ball has an initial volume of 0.5 m3 when it is full of air....
A spherical ball has an initial volume of 0.5 m3 when it is full of air. Assume there is a small hole in the ball and that air leaks from this hole at the rate of 0.05 m3/min. 1. Find the volume of the ball at any instant t.
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A spherical ball has an initial volume of 0.5 m3 when it is full
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7. In a hot summer day, a spherical air bubble that has a volume of 1.20...
7. In a hot summer day, a spherical air bubble that has a volume of 1.20 cm3 is released at temperature 17.0 °C by a scuba diver 20.0 m below the surface of ocean. Calculate the volume of the spherical bubble in units of cm3 when it reaches the surface at temperature 30 °C? Assume that the number of air molecules in the bubble remain the same (pressure at depth h: P = Po + pgh, Po = 1.01 X...
A hot air balloon has a volume of 2000 m3 when fully inflated and the air...
A hot air balloon has a volume of 2000 m3 when fully inflated and the air inside the balloon is at atmospheric pressure (101,000 Pa). What is the mass of hot air inside the balloon if its temperature is 120°C? (Assume a molecular weight of 28.8 g/mole for air, which is about 80% N2 and 20% O2.)
A spherical balloon has a radius of 6.15 m and is filled with helium (pie- 0.179kg/m3)....
A spherical balloon has a radius of 6.15 m and is filled with helium (pie- 0.179kg/m3). How large a cargo can it lift when such a balloon is in the air (Pair 1.29kg/m3), if the skin and structure of the balloon have a mass of 650 kg? Assume that there is no buoyant force on the volume of the cargo.
A welder using a tank of volume 7.40×10−2 m3 fills it with oxygen (with a molar...
A welder using a tank of volume 7.40×10−2 m3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 2.85×105 Pa and temperature of 37.6 ∘C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 22.3 ∘C, the gauge pressure of the oxygen in the tank is 2.00×105 Pa . A. Find the initial mass of oxygen. B. Find the...
b. A hot air balloon has a volume of 2000 m3 when fully inflated, and the...
b. A hot air balloon has a volume of 2000 m3 when fully inflated, and the air inside the balloon is always at atmospheric pressure because of the large opening used to fill the balloon and heat the air inside it. What's the mass of hot air inside the balloon if its temperature is 120°C? (Assume a molecular weight of 28.8 g/mole for air.) 1790 kg 5850 kg 62.0 kg 203 kg
A welder using a tank of volume 7.30×10−2 m3 fills it with oxygen (with a molar...
A welder using a tank of volume 7.30×10−2 m3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×105 Pa and temperature of 36.8 ∘C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 22.9 ∘C, the gauge pressure of the oxygen in the tank is 1.60×105 Pa .Find the initial mass of oxygen.Find the mass of oxygen that...
A welder using a tank of volume 7.50×10−2 m3 fills it with oxygen (with a molar...
A welder using a tank of volume 7.50×10−2 m3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.10×105 Pa and temperature of 37.9 ∘C. The tank has a small leak, and in time some of the oxygen leaks out. On a day when the temperature is 21.9 ∘C, the gauge pressure of the oxygen in the tank is 1.70×105 Pa . Part A Find the initial mass of oxygen. Part B...
Consider a solid body having mass m, volume V, density = 10000 kg/m3 , specific heat...
Consider a solid body having mass m, volume V, density = 10000 kg/m3 , specific heat capacity at constant pressure Cp = 600 J/(kg.K), and its initial temperature Ti = 200oC. Assume the system losses heat to the environment by convection at temperature T = 40oC and heat transfer coefficient h = 12 W/(m2 .K). (a) Start with applying the energy balance, and use the concept of the simplified lumped system analysis to derive an expression for the change of...
When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are...
When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV 1.4 = C, where is a constant. Suppose that at a certain instant the volume is 500 cm and the pressure is 80 kPa and is decreasing at a rate of 10 kPa/min. At what rate is the volume increasing at this instant? (Round your answer to the nearest whole number.) cm/min When air expands adiabatically (without gaining or...
(25 pts) We have a tank of volume V which contains an ideal gas at constant temperature T and initial pressure Po. There is a small hole in the tank and gas leaks out at a velocity of (RT)5, We c...
(25 pts) We have a tank of volume V which contains an ideal gas at constant temperature T and initial pressure Po. There is a small hole in the tank and gas leaks out at a velocity of (RT)5, We can use a molar density 1. Recall that mols in tanke ρν and molar rate out-pud where u-velocity and A - area of hole. Derive the differential equation for P vs t (hint it's a simple exponential) a. drop in...
7. In a hot summer day, a spherical air bubble that has a volume of 1.20 cm3 is released at temperature 17.0 °C by a scuba diver 20.0 m below the surface of ocean. Calculate the volume of the spherical bubble in units of cm3 when it reaches the surface at temperature 30 °C? Assume that the number of air molecules in the bubble remain the same (pressure at depth h: P = Po + pgh, Po = 1.01 X...
A spherical balloon has a radius of 6.15 m and is filled with helium (pie- 0.179kg/m3). How large a cargo can it lift when such a balloon is in the air (Pair 1.29kg/m3), if the skin and structure of the balloon have a mass of 650 kg? Assume that there is no buoyant force on the volume of the cargo.
b. A hot air balloon has a volume of 2000 m3 when fully inflated, and the air inside the balloon is always at atmospheric pressure because of the large opening used to fill the balloon and heat the air inside it. What's the mass of hot air inside the balloon if its temperature is 120°C? (Assume a molecular weight of 28.8 g/mole for air.) 1790 kg 5850 kg 62.0 kg 203 kg
When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV 1.4 = C, where is a constant. Suppose that at a certain instant the volume is 500 cm and the pressure is 80 kPa and is decreasing at a rate of 10 kPa/min. At what rate is the volume increasing at this instant? (Round your answer to the nearest whole number.) cm/min When air expands adiabatically (without gaining or...
(25 pts) We have a tank of volume V which contains an ideal gas at constant temperature T and initial pressure Po. There is a small hole in the tank and gas leaks out at a velocity of (RT)5, We can use a molar density 1. Recall that mols in tanke ρν and molar rate out-pud where u-velocity and A - area of hole. Derive the differential equation for P vs t (hint it's a simple exponential) a. drop in...
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