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An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium. Determine the final temperature in °C, the entropy change for the copper vessel and each of the liquid water masses, and the amount of entropy produced.
a rotating shaft is made of 42 mm od and 4-mm thick aisi 1018 cold-drawn steel tubing. it has has a 6-mm-diameter hole
a 80 kg resting person with a constant core temperature near 37 c transfers heat at the resting rate to hisher
Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.
A piece of pipe 0.3048m long weighing 13.34N and having internal diameter of 0.05207m is slipped over a vertical shaft 0.0508m in diameter and allowed to fall. Calculate the approximate velocity attained by the pipe if a film of oil of kinematic visc..
Air at 40 °C, 1 bar, and 10% RH goes through an evaporative cooler, and the outlet air is cooled to 27 °C. Find (a) the relative humidity at the outlet, and (b) the amount of water added (kg H20 per kg of air).
thin fins with a 0.002m by 0.02m rectangular cross section and thermal conductivity of 50 wmk protrude from a wall and
saturated steam condenses completely to liquid water at a rate of m1 2 kgs at 40 bar pressure saturation temperature
a balanced wheel supported on springs is rotating at 1200 rpm. if a bolt weighing 15 g and located 5 cm from center
a pitot static probe is used to determine the airspeed of an airplane that is flying at an altitude of 6000m. if the
a pile weighing 2000 lb is driven vertically into the ground by a pile-driver hammer weighing 6000 lb which falls
air at the inlet of an ideal reversible-aidabatic compressor enters through a 0.036m2 pipe at 115 kpa. the compressor
The tapered member is fixed connected at its ends A and B and is subjected to a load P = 7 kip at x =30in. Determine the reactions at the supports. The material is 2in. thick and is made from 2014-T6 aluminum (Eal = 10,600ksi).
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