Superconductors are conductors of electrical charge that, for all practical purposes, have infinite resistance
Indicate whether the statement is true or false
FALSE
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This steel alloy results in a material that is very hard and ideal for use in cutting tools.
a. tungsten b. chromium c. manganese d. molybdenum
The induced voltage is ____ to the rate of change of current.
a. proportional b. not related c. inversely proportional d. exponentially related
Which of the statements A–D is false?
A. Internal energy is a state function, while heat and work are not state functions. B. If we write “?H = MCP?T”, we are assuming that the heat capacity is constant. C. If we write “dH = MCPdT”, we are assuming either that the pressure of the system is constant or that enthalpy is independent of pressure. D. When Q or W is positive, this means that either heat is added to the system (Q> 0 ) or work is done on the system (W> 0), according to the sign convention in this book. E. None of these are false.
The three basic methods of heat transfer are:
A) Specific, sensible, and latent. B) Anterior, inferior, and superior. C) Endothermal, exothermal, and isothermal. D) Conduction, convection, and radiation.