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Calculate the voltage output of a dynamic microphone when exposed to soundpressure levels of 70 and 90 dB if the open-circuit sensitivity of the microphone is -37 dB.
Two objects are connected by a light string that passes over a frictionless pulley as shown in fig. Assume the incline is frictionless and take m1 = 2.00 kg, m2 = 6.00 kg, and 0 = 55.0o. Find the magnitude of the acceleration of the objects
ten kilograms of water at saturated liquid phase fills in a piston-cylinder device volume can change at 50oc. the
determine the power produced by a simple sprinkler-like turbine that rotates in a horizontal plane at 500 rpm. the
The block and tackle shown are used to raise a 150-lb load. Each of the 3-in.-diameter pulleys rotates on a 0.5-in.-diameter axle.
A shaft, having a stiffness of 3.75 MN/m, rotates at 3600 rpm. A rotor, having a mass of 60 kg and an eccentricity of 2000 microns, is mounted on the shaft.
Liquid octane (C8H18) at 778F, 1 atm enters a combustion chamber operating at steady state and burns completely with 50% excess dry air entering at 1208F, 1 atm. The products exit at 10608F, 1 atm. Determine the rate of heat transfer between the c..
a rectangular boat the horizontal sides are l each the depth is h l2 is made of a think weightless walls and partially
Compare the natural frequencies of a clamped-free 1-m aluminum bar to that of a 1-m bar made of steel, a carbon composite, and a piece of wood.
a mixture of nitrogen and carbon dioxide with a carbon dioxide mass fraction of 50 percent has a constant-volume
2/107 The rigid pole and cross-arm assembly is supported by the three cables shown. A turnbuckle at D is tightened until it induces a tension T in CD of 1.2 kN. Express T as a vector. Does it make any differ- ence in the result which coordinate sy..
a non-uniform steady incompressible flow is observed to have a velocity of 15ms at a point where the cross-sectional
The period of oscillation T of a water surface wave is assumed to be a function of density , wavelength λ depth , gravity g, and surface tension γ Rewrite this relationship in dimensionless form. What results is γ s negligible?
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