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Briefly explain the following concepts related to exposure thresholds: time-weighted average, short-term exposure limit, exposure ceiling, and biological exposure indices.
Consider a two- dimensional, straight triangular fin of Length L= 50mm and base thickness t= 20mm. The thermal conductivity of the fin is k= 25 W/mK. The base temperature is T_b= 50 degrees Celsius, and the fin is exposed to convection conditions cha..
at time t0 the postion vector of a particle moving in the x-y plane is r5i m. by time t 0.02 s its position vector has
a passive solar house requires an average heating power of 8.4 kw in the winter. it stores energy in 10 tonnes 10000kg
consider a 12-cm-thick plane wall with its inner surface temperature fixed at 0 degrees celsius. when its outer surface
The force of gravity on an imaginary Earth-mass planet - When the two balls are separated horizontally by 5.0 cm, the string hangs
You have a large pin made from aluminum with a diameter of 0.01 m. This pin is needed to hold something from the ceiling. You install the pin into a hole of diameter 0.01 m in a piece of tungsten; assume a "perfect press fit". It was very hot, 323K, ..
an opaque horizontal plate is well insulated on the edges and the lower surface. the irradiation on the plate is 3000
Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC.
a three-span continuous beam abcd with three equal spans supports a uniform load of intensity q. determine all
Discuss the benefits and drawbacks of using certain materials or certain designs in an engineering or architectural project of your choice
A cylindrical Steel compression specimen of 150 mm long, 75.60 mm outside diameter and 69.60 mm inside diameter is used to determine the stress distribution in a compression member. An axial force P = 100 kN is applied at different locations (A, B, o..
the carpenter builds the square frame abcd and then braces it with member ef as shown in order to prevent racking
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