Intensity level if two identical dogs are close each other
The intensity level is 65 dB at a distance 5 m from a barking dog. What would be the intensity level if two identical dogs very close to each other are barking?
a) 130 dB
b) 68 dB
c) 65 dB
d) 136 dB
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Patients who have artificial hip-replacement surgery experience pain the first day after surgery. Typically, the pain is measured on a subjective scale using values of 1 to 5. Let x represent the random variable, the pain score as determined by th
Determine the temperature of the discharged air (assuming other viscous losses to be negligible). Considering the rise in internal energy (which is also considered a loss), determine the efficiency of the compressor, Nc.
Consider the probability function. (Give your answers correct to two decimal places.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) Find the mean. (b) Find the standard deviation.
If the equilibrium surface temperature of the bulb is 350°C and the inlet temperature (the room air) is at 20.0°C, then determine the outlet temperature of the cooling air.
Suppose that you are in a class of 29 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) Compute the probability that exactly five students are left-handed.
A steam power plant operates as a reheat Rankine cycle. Steam enters the high pressure turbine (isentropic efficiency 90%) at 8 Mpa and 500°C. Determine exergy destruction from each heat transfer process in the cycle KJ/KG.
Find the area under the curve for the following z-scores: z= -0.31 and z= 1.53
A string of linear density 1.5 g/m is under a tension of 20 N. What should its length be if its fundamental resonance frequency is 220 Hz?
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