Acircular roofing panel of radius 1 m is installed on the roof of a home. the panel is exposed to the ambient air at t∞ = 25°c (assume that tsur = t∞ = 25°c). the panel absorbs surrounding irradiation (gsur) with an absorptivity (α) of 0.9 and emits radiation out (esur) with an emissivity (ε) of 0.4. the panel surface temperature is measured to be 50°c. determine the ambient convective heat transfer coefficient (h) in w/m2 k. neglect any conduction losses from the panel.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.