Engineering, 14.09.2019 01:20, jamesnech66
Planet mars has a very thin atmosphere composed mostly of carbon dioxide, its molar mass is 43.34 kg/kg-mol. the average atmospheric pressure at its surface is 0.087 psi. its average temperature is -60 degrees celsius at all altitudes. mars' gravity is 3.71 m/s^2, and its average diameter is 6,779 km. a. what is mars atmosphere's gas constant rin (both si units and english engineering units)? b. what is this atmosphere's density at the surface (both si units and english engineering units)? c. calculate mars' atmospheric density and pressure at a geometric altitude of 10km, when the parachute of a lander usually opens (both si units and english engineering units). d. if this lander is falling at approximately 600 m/s, how rapidly are both the density and pressure rising with respect to time?
Answers: 1
Engineering, 04.07.2019 18:10, koolgurl2003
Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.
Answers: 1
Engineering, 04.07.2019 18:10, redrosesxx
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
Engineering, 04.07.2019 18:10, agpraga23ovv65c
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
Planet mars has a very thin atmosphere composed mostly of carbon dioxide, its molar mass is 43.34 kg...
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