A20 mm deep slot is being milled in a block of aluminum with k 850 n/mm2. the tool is 25 mm in diameter, and has 2 teeth. it is rotating at 14,728 rpm, and the chip load (feed per tooth) is 0.1 mm. how much power is consumed in kw?

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?