A new type of device appears to accumulate charge according to the expression q(t) = 10t2 − 22t mC (t in s). (a) In the interval 0 ≤ t < 5 s, at what time does the current flowing into the device equal zero? (b) Sketch q(t) and i(t) over the interval 0 ≤ t < 5 s.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.