a thermocouple consists of two wires made of dissimilar metals that are joine logether to form an electrical circuit. a thermal electromotive force (emf) e i generated when the two junctions are at different temperatures. when one jund tion is held at the ice point and the other is at a celsius temperature of t, th thermometric function is given by where is in millivolts. calculate the constants a and b for a thermocouple read ing 60 mv at 200° c and 40 mv at 400pc. what temperature corresponds to reading of 30 mv?

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons