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A recording engineer works in a soundproofed room that is 36.5 dB quieter than the outside. If the sound intensity in the room is 1.34 x 10-10 W/m2, what is the intensity outside
A marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1520 m/s. When the dolphin is swimming directly away at 5.4 m/s, the marine biologist measures the number
A listener increases his distance from a sound source by a factor of 4.11. Assuming that the source emits sound uniformly in all directions, what is the change in the sound intensity level in dB
Suppose that a public address system emits sound uniformly in all directions and that there are no reflections. The intensity at a location 26 m away from the sound source is 3.0 × 10-4 W/m2.
A wire is stretched between two posts. Another wire is stretched between two posts that are twice as far apart. The tension in the wires is the same, and they have the same mass. A transverse wave t
The middle C string on a piano is under a tension of 970 N. The period and wavelength of a wave on this string are 3.82 ms and 1.18 m, respectively. Find the linear density of the string.
A person fishing from a pier observes that 6 wave crests pass by in 7.3 s and estimates the distance between two successive crests to be 3.8 m. The timing starts with the first wave crest and ends w
A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 37.7 s. The distance between two successive crests is 34.7 m. What is the wave
The conveyor belt moves relatively slow therefore several seconds pass before the separator switches position. The piston moves two switches (N/A) when it is on position one or on position two. The
Write a three function program. The main function must create a string array with room for 10 elements. The main function should call the second function passing it the array as the first argument a
A multi-frequency signal is input to a first-order, low-pass filter. A 60 kHzcomponent is found to be reduced in amplitude by a factor of 90. Find the break frequency of this filter. determine the fa
A load consisting of a 480 ohms resistor in parallel with a (5/9) uF capacitor is connected across across the terminals of a sinusoidal voltage source Vg, where Vg=240cos5000t V. a) What is the peak
Given 4 Bytes of hexadecimal data: 34H, 62H, 43H, and 17H. 1.Find the checksum byte. 2. Perform the checksum operation to ensure data integrity (add the 5 Bytes showing sum equal to zero). 3. If the s
Concentric spherical conducting shells in free space of radii r1 = 0.00113 m and r2 = 0.00220 m have a potential difference of 20.0 V (let the inner shell be at 0 V and the outer shell be at 20.0 V)
Using a 500 Ohm resistance, design an RC low-pass filter that would attenuate a 120-Hz sinusoidal voltage by 20 dB with respect to the DC gain.
Three balanced three-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400+j300 Ohms per phase;[ load 2 is delta-connected with an impedance of 2400-1800j Ohms per ph
We wish to implement the Johnson counter as a Moore machine using three (3) D flip-flops. Give the simplified excitation equations for each of the flip-flops, and draw the circuit. There is no input
Assume A is the MSB and B is the LSB. The circuit produces an output of 1 if and only if the sum of the current 2-bit input and the previous 2-bit input is equal to 6. Design the circuit using as fe
Assume the factory described in the previous problem is fed from a line having an impedance of 0.02 + j0.16-ohm. The voltage at the factory is maintained at 480 V(rms). Find the average power loss i
A power supply, when connected to a radio, provides 5V to the radio. When connected to a lamp, it provides 4V to the lamp. Assume the radio can be modeled as 6ohm resistor and the lamp can be modele
A THREE PHASE, Y-CONNECTED, 60Hz, TWO POLES SYNCHRONOUS MACHINE HAS A STATOR WITH 5000 TURNS OF WIRE PER PHASE.WHAT ROTOR FLUX WOULD BE REQUIRED TO PRODUCE A TERMINAL (LINE-TO-LINE) VOLTAGE OF 13.2k
Suppose that the machining operation requires 1 kW, that the tool machine ihas 90 percent efficiency, and that the supply current is 14 A rms with a power factor of 0.8. Find the AC machine efficien
The heating element in a soldering iron has a resistance of 30-ohm. Find the average power dissipated in the soldering iron if it is connected to a voltage source of 117 V rms.
Derivation of J-V relationship for p-n junction Steps: a) Write the excess electron concentration on the p-side as a function of position b) Write the excess hole concentration on the n-side as a fu
A small ac motor, draws 100 VA from its 120-Vrms, 60 Hz ac source and consumes 50 W. Find the rms current the motor draws from the supply.