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Consider a 300 mm x 300 mm window in an aircraft. For a temperature difference of 80oC from the inner to the outer surface of the window, calculate the heat loss through a 10 mm think polycarbonate, soda lime glass, and aerogel windows respectively. The thermal conductivity of aerogel and polycarbonate are kag=0.014W/mK and kpc=0.21 W/mK . Evaluate the thermal conductivity of the soda lime glass at 300 K. If the aircraft has 130 windows and it costs $1/kWh to heat the cabin, compare the costs associated with the heat loss through the windows for an 8 hour flight.
determine the critical load on a steel column having a square cross section 12 mm on a side with a length of 300 mm.
a charge of -8.1 microc is traveling at a speed of 8.7 106 ms in a region of space where there is a magnetic field. the
a brick wall 3 m high 7.5 m wide and 200 mm thick has a thermal conductivity of 0.7 wmcelcius. the temperature on the
a 0.1-m3 rigid tank contains steam initially at 500 kpa and 200 c. if the temperature in the tank is lowered to 50 c
water enters an insulated nozzle operating under steady conditions at a pressure of 60 psia a temperature of 350 degf
Solve the problem in the image. Do it step wise in detail. This question is from book "Fracture Mechanics - An Introduction - E. Gdoutos Springer (Page 74)"
the fatigue data for a brass alloy are given as followsstress amplitude mpa -----------------cycles to failure310
a stone is dropped into a lake causing circular waves whos radii increase at a contant rate of .5 ms at what rate is
the hydraulic actuator moves the pin p upward with velocity v 2j ms. determine the velocity of the pin in terms of
saturated steam at 2 mpa is contained in a piston-cylinder device. the initial volume is 0.25 cubic meters. heat is
a robotic rover on mars finds a spherical rock with a diameter of 10 centimeters. the rover picks up the rock and lifts
Calculate the deflection of the simply supported beam at the center. The material is A36 steel and calculate the deflection of the simply supported beam at the center. The material is A36 steel and the beam is ten feet long.
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