Identify two technologies that can be used to find the locations of objects. Identify the type or types of waves each technology uses.

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

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Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.