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the viscosity of water is 165 lbmh middot ft at 100f a small capillary tube 50 plusmn 001 ft long is to be used to
a concentric-cylinder device like that in fig 95 is used for a measurement of the thermal conductivity of water at 35c
the apparatus of fig 93 is used for measurement of the thermal conductivity of an unknown metal the lengths of the
a loschmidt apparatus with l 50 cm is used to measure the diffusion coefficient for co2 in air after a time of 652 min
a copper sphere 25 cm in diameter is used as a slug-type heat-flux meter a thermocouple is attached to the interior and
a heat-flux meter is to be constructed of a thin layer of glasslike substance having a thermal conductivity of 04 btuh
the thermal conductivity of an insulating material is to be determined using a guarded hot-plate apparatus a 30 times
wet-bulb and dry-bulb thermometers of air at 1 atm read 20c and 35c respectively within plusmn05c calculate the
a composite layer is formed of 3 mm of copper 2 mm of constantan and 3 mm of copper constantan has the thermal
the dew point of air at 40c is measured as 25c plusmn 05c calculate the relative humidity and wet-bulb temperatures and
the estimated accuracy of a sound-intensity measurement is usually expressed in decibels calculate the uncertainties in
four sound sources of 62 58 65 and 70 db are added together calculate the total sound intensity in two different ways
two microphones having sensitivities of -55 and -70 db are available what amplification factor must be applied to the
compare the sound-level-meter weighting-characteristic curves with the loudness curves of 40 70 and 90 phon
calculate the value of the time constant for the instrument in prob 115 if ccc 065prob 115a seismic accelerometer is
it is possible to experience feedback distortion when a record turntable is placed too close to a loudspeaker the
a certain loudspeaker produces a sound-pressure level of 90 db at a distance of 10 m from the speaker cone for a power
calculate the velocity amplitudes of the waves in prob 1140prob 1140calculate the particle displacement amplitudes for
a small seismic instrument is to be used for measurement of linear acceleration the natural frequency for the device is
suppose noise levels of a tape recorder are stated as -55 db while another figure is given as -60 db a-weighted explain
a microphone having an open-circuit sensitivity of -55 db is said to have a noise level of 28 db for a sound level of
four sound sources of 63 78 89 and 92 db are to be added together calculate the total sound intensity in two different
the instrument in prob 1149 is operated under a critically damped situation approximately what will be the acceleration
in checking a stereo speaker system for balance the left and right channels are found to differ by 3 db at spl 80 db
calculate the voltage output of a dynamic microphone when exposed to soundpressure levels of 70 and 90 db if the