Helium has a ratio of specific heats (gamma) of 1.66. What temperature would it need to be to have a sound speed of 343 m/s?
Helium has a ratio of specific heats (gamma) of 1.66. What temperature would it need to...
The speed of sound in room temperature (20?C) air is 343 m/s; in room temperature helium, it is 1010 m/s. The fundamental frequency of an open-closed tube is325Hz when the tube is filled with air. What is the fundamental frequency if the air is replaced with helium?
What is the RMS speed of Helium atoms when the temperature of the Helium gas is 448 K? (Possibly useful constants: the atomic mass of Helium is 4.00 AMU, the Atomic Mass Unit is: 1 AMU = 1.66×10-27 kg, Boltzmann's constant is: kB = 1.38×10-23 J/K.) What would be the RMS speed, if the temperature of the Helium gas was doubled?
What is the RMS speed of Helium atoms when the temperature of the Helium gas is 412.0 K? (Possibly useful constants: the atomic mass of Helium is 4.00 AMU, the Atomic Mass Unit is: 1 AMU = 1.66×10-27 kg, Boltzmann's constant is: kB = 1.38×10-23 J/K.) What would be the RMS speed, if the temperature of the Helium gas was doubled?
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 19.0 oC? The speed of sound in oxygen at 19.0°C is 328 m/s.
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 15.9 oC? The speed of sound in oxygen at 15.9°C is 322 m/s.
For fire safety considerations, there is a proposal to replace nitrogen with helium in air as the atmosphere of EVA operation in manned space vehicles. Compute the speed of sound for an atmosphere with 25% O2 and 75% He (volume or molar percentages) at a temperature of 15 C and 80 kPa pressure. Compare your answer with that of standard air in the same environmental conditions. (Hint: you need to determine both the molecular weight of the mixture and the...
At what temperature would the average speed of helium atoms equal the following value? Note: The mass of a helium atom is 6.64 x 10-27 kg. (a) the escape speed from Venus, 1.04 x 104 m/s (b) the escape speed from the Moon, 2.37 x 103m/s
Use variable specific heats. An air-standard dual cycle has a compression ratio of 14 and cut-off ratio of 1.2. The pressure ratio during constant volume heat addition (process 2-X) is 1.5. Determine the: (A) Thermal efficiency (B) Amount of heat added (C) Maximum gas pressure and temperature when the cycle is operated at 80kPA and 20°C at the beginning of the compression. Use variable specific heats.
2. What is the ratio of the velocity of sound in helium gas to that in air at the same pressure and temperature? On the basis of your answer, can you explain why you will sound funny if you happen to in helium gas and speak? With explanation please and step-by-step solution. Thanks
A liquid propellant engine chamber pressure=10 MPa, constant ratio of specific heats = 1.2, a characteristic velocity =1800 m/s. The nozzle has a throat area = 0.015 m2 and an area ratio = 16. Find the mass flux through the throat