Acylindrical steel ingot 150 mm in diameter and 400 mm long passes through a heat treatment furnace which is 6 m in length. the ingot must reach a temperature of 850 °c before it comes out of the furnace. the furnace gas is at 1280 °c and ingot initial temperature is 100 °c. what is the maximum speed with which the ingot should move in the furnace to attain the required temperature? the combined radiative and convective surface heat transfer coefficient is 100 w/m2 °c. take kisteel 45 w/m°c and a (thermal diffusivity) 0.46x10-5 m2/s ans. 1.619x10-m/s

no

explanation:

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the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl