Helium gas (a monatomic gas, constant specific heats) is compressed from 16 psia and 85◦f to 120 psia in a steady-state compressor. the inlet volume flow rate is 8 ft3/s. assume internally reversible process with negligible changes in kinetic and potential energy and ideal gas behavior. determine the power input [hp] and heat transfer rate [btu/s] for each of the following processes (include p − v, t − s diagrams for each): a. isentropic process b. polytropic process with n

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work