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The estimated accuracy of a sound-intensity measurement is usually expressed in decibels. Calculate the uncertainties in intensity in watts per square centimeter corresponding to ±1, ±2, and ±3 dB. Express these as percentage values at sound levels of 50, 80, and 120 dB.
a four-cylinder spark ignition engine has a compression ratio of 8 and each cylinder has a maximum volume of 0.6l. at
(a) If the outlet temperature of the oil is 60°C, determine the total heat transfer and the outlet temperature of the water. (b) Determine the length required for the heal exchanger.
what size unf bolt made from sae grade 5 steel is needed to carry a static tensile load of 3000lb with a safety factor
Create and submit for evaluation Marcus Tullius Cicero (106 - 46BC). A paper version of a double-spaced single-sided report comprising at least 5 pages of double spaced 12pt text.
We must now rely on the Russians for this capability. Use the principles of engineering economy to examine this decision.
steam entering a nozzle has an enthalpy of 3200 kjkg and its intial velocity is 75 ms. the exit stream has an enthalpy
design a chain drive for a steam turbine driving a centrifugal pump. the input speed is 2200 rpm and output is around
he vapor compression heat pump operates at steady state using refrigerant 22 whose flow rate is 6kgmin. the heat pump
1 use boltzmann distribution to mathematically show that a two level laser system is not possible. calculate the ratio
Determine the force in each member of the truss and state if the members are in tension or compression. Set P1 = 20 kN and P2 = 10 kN - Determine the force in each member of the truss and state if the members are in tension or compression. Hint: Th..
Considering the flow of a uniform stream of speed V in the x-direction, a source of strength Q at (-1,0) and sink of strength Q at (1,0). Find the velocity potential and the stagnation points
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.
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