Server x is running diablo ii services on port #4000. client a is running an application that uses port #450 to request an diablo ii tcp connection to server x. client b is running an application that uses port #455 to request an diablo ii tcp connection to server x. ip addresses: server x: 152.111.20.36 client a: 113.13.131.10 client b: 114.192.111.23 client b starts a second application (running at the same time as the first application) that uses the next incremental port number to request an diablo ii tcp connection to server x. the connection created for client b is identified by the sockets at the endpoints as follows: p address port number on client select ] [select ] on server [select ] select]

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?