If you want to make a strong battery, should you pair two metals with high electron affinities, low electron affinities, or a mix?
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What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Athin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. the rod (a) has a thermal conductivity of ka = 0.15 w/(m*k), while the tube (b) has a thermal conductivity of kb = 0.8 w/(m*k) and its outer surface is subjected to convection with a fluid of temperature t= -15°c and heat transfer coefficient 60 w/(m2 *k). the thermal contact resistance between the cylinder surfaces and the heater is negligible. (a) determine the electrical power per unit length of the cylinders (w/m) that is required to maintain the outer surface of cylinder b at 15°c. (b) what is the temperature at the center of cylinder a?

Answer each myth with facts and evidence, explain why they are un-true. 4. myth: an organism's kingdom only describes physical characteristics. fact: evidence: 5. myth: mammals and plants don't belong in the same domain. fact: evidence: