Answered: fan draws 1.42m3 per second of air at a…

fan draws 1.42m3 per second of air at a static pressure of 2.54 cm of water through a duct 300 mm diameter and discharges it through a duct of 275 mm

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter13: Temperature, Kinetic Theory, And The Gas Laws

Section: Chapter Questions

Problem 57PE: A deepsea diver should breathe a gas mixture that has the same oxygen partial pressure as at sea...

See similar textbooks

Similar questions

A vertical cylinder of cross-sectional area A is fitted with a tight-fitting, frictionless piston of mass m (Fig. P16.56). The piston is not restricted in its motion in any way and is supported by the gas at pressure P below it. Atmospheric pressure is P0. We wish to find die height h in Figure P16.56. (a) What analysis model is appropriate to describe the piston? (b) Write an appropriate force equation for the piston from this analysis model in terms of P, P0, m, A, and g. (c) Suppose n moles of an ideal gas are in the cylinder at a temperature of T. Substitute for P in your answer to part (b) to find the height h of the piston above the bottom of the cylinder.
What is the gauge pressure inside a tank of 4.86104 mol of compressed nitrogen with a volume of 6.56 m3 if the rms speed is 514 m/s?
A deepsea diver should breathe a gas mixture that has the same oxygen partial pressure as at sea level, where dry air contains 20.9% oxygen and has a total pressure of 1.01105N/m2. (a) What is me partial pressure of oxygen at sea level? (b) If the diver breathes a gas mixture at a pressure of 2.00106N/m2, what percent oxygen should it be to have the same oxygen partial pressure as at sea level?
A spherical gas-storage tank with an inside diameter of 26 ft is being constructed to store gas under an internal pressure of 178 psi. The tank will be constructed from structural steel that has a yield strength of 36 ksi. If a factor of safety of 3.0 with respect to the yield strength is required, determine the minimum wall thickness required for the spherical tank. O 1.50 in. O 0.72 in. 666 O 1.16 in. 1.06 in. O 0.93 in.
Steam enters an adiabatic diffuser at 150 kPa and 1208C with a velocity of 550 m/s. Determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kPa.
A high-pressure gas cylinder contains 70.0 L of toxic gas at a pressure of 2.10 x 107 N/m2 and a temperature of 14.0°C. Its valve leaks after the cylinder is dropped. The cylinder is cooled to dry Ice temperatures (-78.5°C), to reduce the leak rate and pressure so that it can be safely repaired. (a) What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled and that there is no phase change? N/m² (b) What is the final pressure if one-tenth of the gas escapes? N/m² (c) To what temperature must the tank be cooled to reduce the pressure to 1.00 atm (assuming the gas does not change phase and that there is no leakage during cooling)? K Additional Materials
A pressure versus volume (pV) diagram for a system is shown in the figure. The arrows of the curve indicate the direction of the process, and the points of interest are labeled. The values 1 for the points in the diagram are shown in the table. Volume (m³) Pressure (Pa) Vo 25.8 Po = 1.00 x 104 3 Vi = 20.8 Pi = 1.00 × 104 V2 = 17.4 P2 5.34 x 103 V3 = 13.9 P3 5.34 x 103 V4 13.9 P4 3.20 x 103 5 Vs = 9.55 P5 = 1.00 x 103 Calculate the amount of work done on the system from 0-2 ( Wo2) and then for the entire curve from 0-5 (Wos). Volume (m³) -6.03 x104 Wo2 = J Incorrect -7.86 x104 Wo5 = J Incorrect Pressure (Pa)
Q8 Pressure 6 Points A fish swims to a depth of 50.00 meters in the ocean. Assuming the density of sea water is 1.025 g. cm³, calculate how much water pressure the fish is experiencing at this depth in -3 units of kPa. [Work must be shown to receive full credit] A Please select file(s) Select file(s) Q9 Gas Expansion Efficiency 8 Points 3.00 moles of Ne gas irreversibly and isothermally expands from an initial volume of 4.00 L to a final volume of 17.00 L at 25.0°C. Calculate the work (in kJ) for this expansion and compare it to the maximum amountfof work that can be achieved (i.e. what is the efficiency). [Work must be shown to receive full credit] Please select file(s) Select file(s) Q10 Enthalpy Homework 8 Points In doing their physical chemistry homework, Rahim and Lila independently worked a problem 6,165 OCT Aa 23
An oil pump operating at steady state delivers oil at a rate of 10 lb/s through a 1-in.-diameter exit pipe. The oil, which can be modeled as incompressible, has a density of 70 lb/ft3 and experiences a pressure rise from inlet to exit of 40 lb/in². There is no significant elevation difference between inlet and exit, and the inlet kinetic energy is negligible. Heat transfer between the pump and its surroundings is negligible, and there is no significant change in temperature as the oil passes through the pump. Determine the velocity of the oil at the exit of the pump, in ft/s, and the power required for the pump, in hp. Step 1 Determine the velocity of the oil at the exit of the pump, in ft/s. Your answer is correct. V₂ = 26.192 Hint Step 2 * Your answer is incorrect. W₁ = in ft/s Determine the power required for the pump, in hp. 1.4961 hp Attempts: 1 of 4 used
A high-pressure gas cylinder contains 70.0 L of toxic gas at a pressure of 1.40 x 107 N/m² and a temperature of 16.0°C. Its valve leaks after the cylinder is dropped. The cylinder is cooled to dry ice temperatures (-78.5°C), to reduce the leak rate and pressure so that it can be safely repaired. (a) What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled and that there is no phase change? 9.42e6 N/m² (b) What is the final pressure if one-tenth of the gas escapes? 8.61e6 N/m² (c) To what temperature must the tank be cooled to reduce the pressure to 1.00 atm (assuming the gas does not change phase and that there is no leakage during cooling)? 2.14 Review the values for initial and final pressure for this situation. K
Steam to drive an old-fashioned steam locomotive is supplied at a constant gauge pressure of 1.9 × 106 N/m² to a piston with a 0.19 m radius. By calculating PAV , find the work done by the steam when the piston moves 0.81 m in J. Note that this is the net work output, since gauge pressure is used. W= Now find the amount of work done by calculating the force exerted times the distance traveled in J.
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.40 X 107 N/m2 and a temperature of 25.0oC. Its valve leaks after the cylinder is dropped. The cylinder is cooled to dry ice temperature (-78.5oC) to reduce the leak rate and pressure so that it can be safely repaired. (a) What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled and that there is no phase change? (b) What is the final pressure if one-tenth of the gas escapes? (c) To what temperature must the tank be cooled to reduce the pressure to 1.00 atm (assuming the gas does not change phase and that there is no leakage during cooling)? (d) Does cooling the tank appear to be a practical solution?