Along cylinder of 30-mm diameter, initially at a uniform temperature of 750 k, is suddenly quenched in a large, constant-temperature oil bath at 350 k. the cylinder properties are k= 1.7 w/m·k, c= 1600 j/kg·k, and ρ= 400 kg/m3, while the convection coefficient is 51 w/m2·k. (1) use the one-term approximation method to solve for the fourier number.? (2) solve for the time required for the surface of the cylinder to reach 500 k, in sec.?

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

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