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Consider a thin thermocouple that behaves like iron having dimensions of 0.5 × 0.1 × 0.005 in. Calculate the time constant for such a thermocouple when exposed to an airstream with a convection heat-transfer coefficient of 100 W/m2 · ?C.
The plain concrete beam shown having a rectangular cross section 10-in. wide and 18-in. deep is simply supported on a single span of 20 ft. Find the bending stresses that exist at mid span.
14. For each of the following F values, indicate whether the F is statistically significant at the specified alpha level: a. F = 4.80, df = 4, 40 α = 0.01 b. F = 5.02, df = 3, 60, α = 0.001 c. F = 3.45, df = 3, 27, α = 0.05 d. F = 4.99, df = 2, 150, ..
Water is being pumped from a large lake to a reservoir 30 m above at a rate of 5x10-3 m3/s by a 12 kW (shaft) pump. If the irreversible head loss of the piping system is 8m, determine the mechanical efficiency of the pump.
Calculate the elastic modulus and thermal conductivity perpendicular to continuous, reinforcing fibers in an E-glass (70 vol%) polyester composite.
A well-insulated heat exchanger is used to heat water (cp = 4.18 KJ/kg*K) from 300 K to 90°C with a mass flow rate of 3 kg/s. Heat is supplied by hot oil (cp = 2.3 KJ/kg*K) that enters the heat exchanger at 200°C with a mass flow rate of 15 kg/s.
A rocket is launched horizontally (x direction) at an initial velocity of 100 m/s and travels along a parabolic path given by y 2 = (100x) km. If the x component of acceleration is ax = (2t + 15) m/s2 , where t is in seconds, determine magnitude and ..
a sealed cylindrical vessel of 60 cm diameter and 80 cm height contains 3.2 kg of a gas. the pressure measured with a
a polluted air stream flowing at 12000 acfm at 90 degf and 1 atm has a concentration of 500 ppm of ethylbenzene c8h10.
determine the critical crack length for an internal crack in a thick 2024-t6 alloy plate that has a racture toughness
a 100 lbm liquid-vapor mixture of water in a rigid container with a volume of 3 ft3 at a temperature of 100of is heated
a water cannon for rock tunneling operates by using compressed gas for accelerating a 65-kg high-strength titanium
A silty clay soil has a plasticity index (PI) of 14. Estimate the optimum moisture content and the maximum dry unit weight of the soil when compacted using the procedure of:
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