A train horn is heard at a 50 db level by an observer 10 km
A train horn is heard at a 50 dB level by an observer 10 km away. What is the average power generated by the horn? What intensity level is heard by an observer 50 m from the train?
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A bartender slides a beer mug at 1.5 m/s towards a customer at the end of a frictionless bar that is 1.2m tall. how far way from the end of the bar does the mug hit
The ABC Company has a cost of equity of 10.5 percent, a pre-tax cost of debt of 5.9 percent, and a tax rate of 25 percent. What is the firm's weighted average cost of capital if the weight of debt is 47 percent?
Define visual art. Differentiate the visual arts from other forms of creative expression. List the different media of visual art, such as painting, sculpture, photography, and so on. Define the meaning of historical, social, and aesthetic values and
an abc-phase sequence three-phase balanced wye connected 60 Hz source supplies a balanced delta-connected load. the phase impedance in the load consists of 20 ohm resistor in series with a 50 mh inductor and the phase voltage at the source
A train horn is heard at a 50 dB level by an observer 10 km away. What is the average power generated by the horn
Calculate the diameter of a medium carbon steel pin in double shear subjected to a suddenly applied shearing force of 150,000N
The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O--->N2 + O2. If the activation energy is 250 kj/mol and the frequency factor is 8.0 x 10^11 s^-1, what is the rate constant for the first order react
What is the cost of the cash alternative at the end of 2 years? f.Should Bob and Carol choose the financing or the cash alternative?
in a balanced three-phase wye system the source is an abc-sequence set of voltage. the load voltage on the a phase is Van= 108.58<79.81 Vrms Z line = 1 + j1.4 ohm Z load = 10 + j13 ohm. Determine the input sequence of voltage.
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