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A spring-mass-damper system is subjected to a harmonic force. The amplitude is found to be 20mm at resonance and 10mm at a frequency 0.75 times the resonance frequency. Find the damping ratio in the system?
an air-standard otto cycle compression ratio of 9 absorbs 1000 btulbm of air. if at the beginning of the compression
now consider the cooling process. it takes place in a heat exchanger hx. warm air. at 75 f is flows into one side of
a single-pass cross flow heat exchanger shown below is utilized to transfer heat from fluid a to fluid b. right after
The block is a cube that is 300mm on each side. Assume the block is incredibly tall. At steady state, what is the velocity of the block?
an ideal otto cycle heat engine with compression ratio 15.1 assume perfects gases with constant specifics heat. heat
steam enters a heat exchanger operating at steady state at 0.1 mpa and 100 degrees c and exits at the same pressure as
determine the volume required to store 25kg of ethane at 320kpa and 35 degrees celsius. if the temperature rises to 65
steam at 1 mpa 630.2oc expands in an insulated piston cylinder assembly to 0.01 mpa. determine the maximum work kj done
the density of atmospheric air is about 1.15 kgm3which we assume is constant. how large an absolute pressure will
a boat travels at a constant speed of 15 ms around the circumference of a half circle in a time span of 45 s. what is
a cylindrical bar of metal having a diameter of 18.4 mm and a length of 192 mm is deformed elastically in tension with
a pressurized water tank is used as a source of water for a fire hose. the pressure of the air in the top of the tank
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