Engineering, 27.08.2019 20:20 icantspeakengles
Afreezer compartment is covered with a 2.0-mm-thick layer of frost at the time it malfunctions. if the compartment is in ambient air at 20ºc and a coefficient of1.8 w/m2 ·k characterizes heat transfer by natural convection from the exposed surface of the layer, estimate the time required to completely melt the frost. the frost may be assumed to have a mass density of 740 kg/m3 and a latent heat of fusion of 334 kj/kg. t= hours
Answers: 3
Engineering, 03.07.2019 14:10
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point
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Engineering, 04.07.2019 19:10
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
Engineering, 04.07.2019 19:10
The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false
Answers: 2
Afreezer compartment is covered with a 2.0-mm-thick layer of frost at the time it malfunctions. if t...
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