What is the atomic number
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, an X-ray of wavelength 243.14 pm is emitted. What is the atomic number?
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Nitrogen gas enters an adiabatic nozzle with negligible velocity, 300 kPa, 800 K and exits at 200 m/s. For a nozzle isentropic efficiency of 80%, calculate the exit temperature (K).
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An axial flow compressor stage has blade root,mean and tip velocities of 150,200 and 250 m/s. The stage is to be designed for a stagnation temperature rise of 20K and axial velocity of 150 m/s, both constant from root to tip.
The National Safety Council reported that 52 percent of American turnpike drivers are men. A sample of 300 cars traveling southbound on the New Jersey Turnpike yesterday revealed that 170 were driven by men. At the .01 significance level, can we c
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Given that one solar mass is 2.0×1030 kg, what would be the radius of a Black Hole containing this amount of mass? (Just an interesting note: the average radius of the orbit of Mercury from the Sun is about 5.8×1010 m.)
Calculate the maximum mass flow rate at the inlet condition that this compressor can handle without violating the second law of thermodynamics.
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