Four point charges qa = 2 μc, qb = –5 μc, qc = 2 μc, and qd = –5 μc are located at the corners of a square abcd of side 10 cm. what is the force on a charge of 1 μc placed at the centre of the square?
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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.