What is the distance to the star
A star has an apparent magnitude of -1.5 and an absolute magnitude of 1.4 (giving it an m-M value of -2.9). If the value of the extinction towards the star Av is on the order of 0.5 magnitudes, what is the distance to this star?
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An orifice meter is to be installed in a 12-in ductile iron pipe carrying water at 60°F. A mercury manomoter is to be used to measure the pressure difference across the orifice when the expected range of the flow rate is from 1500 gal/min to 4
A judge chooses a jury of n people out of a pool of N people. The choice is uniform among all subsets of n elements of the pool. Unhappy with an outcome, he dissolves this jury (returning the people into the pool) and chooses another jury of m peo
Hydrogen at 25 bar, 450°C enters an adiabatic turbine and expands to 2 bar, 160°C with a mass flow rate of 0.2 kg/s. For a dead state of To= 25°C, Po = 1 atm determine the exergetic efficiency.
Air is expanded from 2000 kPa and 500C to 100kPa and 50C. Assuming constant specific heats, determine the change in specific entropy of air.
An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 140 students in the fall semester, she gave out only 5% As, 23% Bs, 42% Cs, and 30% Ds and Fs. Assuming that this was a representative cl
A hydraulic jump at the base of a spillway of a dam is such that the depths upstream and downstream of the jump are 0.90 and 3.6m, respectively.
Consider axial viscous flow in a long annular pipe driven by a pressure gradient with an inner solid rod of radius Ri. Determine the wall shear stress, tau, acting on the inner and outer walls.
Assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. specific heats at room temperature.
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