a small piece of mass 40 g is attached to the end of the light string of length 50 cm and allowed to hang freely. the lead is displaced to 0.5cm above its rest position, and then released. Calculate the period of the resulting motion, assuming it is simple harmonic. Calculate the maximum speed of the lead mass.​

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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?

Apreheater involves the use of condensing steam at 100°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?