In a copper mining company, cleaning work is being carried out in the grinding area, so the industrial cleaning personnel proceed to carry out this task and then moisten the floor to avoid suspended particles. The water used for this purpose (ρwater = 1000 kg/m³) is flowed through a 4 in (10.16 cm) diameter hose, at a temperature of 15 °C. In order to improve cleaning efficiency, a laminar flow is generated, changing the hose outlet area, thereby reducing the water velocity to 50% of its inlet velocity (vi = 10 m/ s). Next, answer the following: 1. Determine the outlet diameter of the pipe. 2. A copper metal piece is being made for the maintenance of the facilities. The required length of the copper piece is 2 m, all at room temperature (23 °C). What is the length of the copper when the temperature is decreased to 15 °C? Consider that the linear thermal expansion (α) of copper is 16.7 x 10-6 °C-1.