Two identical masses on a horizontal plane slide along the x and y axes, respectively. Each is connected to the origin by an identical spring with force constant κ. They are also connect to each other by a third spring with a different force constant and a length that makes it unstressed when the other two springs are unstressed. Calculate the normal modes and normal coördinates for this system.

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Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)