Mr. gewanter, whose mass is 60.0 kg, is doing a physics demonstration in the front of the classroom. a) how much gravitational force does he exert on 55.0-kg martha in the front row, 1.50 m away? b) how does this compare to what he exerts on 65.0-kg lester, 4.00 m away in the back row?

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.