The tank is filled with water (p = 997 kg/m), the tank height is 4 m and its surface area is 2 m². the opening at the bottom has a diameter of 1.5x102 m and a surface area of 1.77x10+ m². if the velocity of water escaping at the opening is represented by v = 2.g. h, where g is the gravity acceleration (9.81 m²/s) and h is the height of water inside the tank (m). a. what will be the height of water in the tank after 60 min.? b. how much time it is required to fully empty the tank? c. if a feed stream is introduced into the tank at rate of 7.84x10% (m/s), what will be the final height of water inside the tank?

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?

Different between boring and turning?