An inductor of =6.95 H with negligible resistance is placed in series with a ℰ=12.5 V battery, a =3.00 Ω resistor, and a switch. The switch is closed at time =0 seconds. A square loop circuit containing a battery with E M F script E, an open switch S, and inductor of inductance L, and a resistor of resistance R, all connected in series. Calculate the initial current at =0 seconds. (=0 s)= 0 A Calculate the current as time approaches infinity. max= ___ A Calculate the current at a time of 1.85 s. (=1.85 s)= ___A Determine how long it takes for the current to reach half of its maximum. = ___s

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.

Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process