Small speakers can produce very loud sounds with little power input. Calculate the power required to...
Small speakers can produce very loud sounds with little power input. Calculate the power required to produce 90 dB sounds directly in front of a 12 cm diameter speaker.
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Small speakers can produce very loud sounds with little power
input. Calculate the power required to...
0-11 points OSUniPhys1 17.3.P.072. Loudspeakers can produce intense sounds with surprisingly small energy input in spite...
0-11 points OSUniPhys1 17.3.P.072. Loudspeakers can produce intense sounds with surprisingly small energy input in spite of their low efficiencies. Calculate the power input needed (in W) to produce a 88.1 dB sound intensity level for a 10.5 cm diameter speaker that has an efficiency of 1.06%. (This value is the sound intensity level right at the speaker.)
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The...
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. The sound level of this creature has been measured as high as 100 dB. (a) Calculate the intensity of the sound wave emitted. W/m2 (b) What is the intensity level if three of these toadfish try to make a sound at the same time? dB
3. In a small hydroelectric power station, the turbine uses the energy of the water in...
3. In a small hydroelectric power station, the turbine uses the energy of the water in the reservoir behind the dam to produce 12000 horsepower. The circular channels before and after the turbine have a diameter of 90 inches. If the head loss across the dam can be calculated from hloss=cV²/2g where c=8 and V is the water velocity in the circular channel, calculate the volumetric flow rate, Q, through the system and the corresponding head loss for h=400 ft...
Electricity production requires the construction of very big and expensive power plants. Let's say a nuclear...
Electricity production requires the construction of very big and expensive power plants. Let's say a nuclear power plant costs $100 million. Once it's built, the only input required is very small amount of labor- one person sits in a room and watches a screen to make sure nothing terrible happens. This person is paid $10/hour ($80 per day). The power plant can produce 100,000,000 watts of electricity a day. (A "watt" is how we measure electricity 100,000,000 is 100 "megawatts".)...
QUESTION 12, 13, 14???? In 3.14, can write Gt and Gr directly in the answer, or...
QUESTION 12, 13, 14????
In 3.14, can write Gt and Gr directly in the answer, or assume
Gt and Gr =1 (specify hypothesis)
P3.8. Path loss, fading, and delay spread are the three most important radio propagation issues. Explain why those issues are important in a cellular system. What is the difference between fast fading and slow fading? Р3.9. How is radio propagation on land different from that in free space? What does a small delay spread indicate about the...
The required water flow rate in the 6 cm diameter 30-meter long circular pipe in the...
The required water flow rate in the 6 cm diameter 30-meter long circular pipe in the diagram below is 12 liters per second. The water temperature is 4 °C and the flow discharges into the atmosphere at a pressure of PB = 100 kPa. The flow is fully developed turbulent flow and there is no elevation change. The surface of the wall has become degraded due to pitting and deposits such that there is a surface roughness with a height...
QUESTION 1 Anna the Audiophile has asked for your help to build an amplifier and filter...
QUESTION 1 Anna the Audiophile has asked for your help to build an amplifier and filter to take small signals from her hifi system and amplify them so that she can drive her new subwoofer. The hifi system produces AC signals at varying frequencies with 250mVrms maximum magnitude Her subwoofer requires the signals to be 20 Vrms maximum magnitude. The signals that Anna is interested in are below 200 Hz. She would like the filter to attenuate signals at frequencies...
QUESTION Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from hi...
QUESTION Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from his bird sensing microphones and amplify them so that he can capture the signals on his PC. The microphone produces AC signals at varying frequencies with 10 mV magnitude. His PC requires the signals to be 1 V magnitude. The signals that Bary is interested in are above 1 kHz Hz. He would like the filter to attenuate signals at...
QUESTION 1 Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from his...
QUESTION 1 Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from his bird sensing microphones and amplify them so that he can capture the signals on his PC. The microphone produces AC signals at varying frequencies with 10 mV magnitude. His PC requires the signals to be 1 V magnitude. The signals that Barry is interested in are above 1 kHz Hz. He would like the filter to attenuate signals...
I am completing a study guide for the next section of class because I am trying...
I am completing a study guide for the next section of class
because I am trying to get ahead. Any suggestions?
A wave whose displacement velocity is either in the same direction or opposite direction as the wave velocity describes which type of a wave? a. Transverse wave b. Mechanical wave c. Longitudinal wave d. Electromagnetic wave Which of the following are always one wavelength apart and are drawn as parallel lines? Plane waves b. Wave fronts c. Wave phase...
0-11 points OSUniPhys1 17.3.P.072. Loudspeakers can produce intense sounds with surprisingly small energy input in spite of their low efficiencies. Calculate the power input needed (in W) to produce a 88.1 dB sound intensity level for a 10.5 cm diameter speaker that has an efficiency of 1.06%. (This value is the sound intensity level right at the speaker.)
3. In a small hydroelectric power station, the turbine uses the energy of the water in the reservoir behind the dam to produce 12000 horsepower. The circular channels before and after the turbine have a diameter of 90 inches. If the head loss across the dam can be calculated from hloss=cV²/2g where c=8 and V is the water velocity in the circular channel, calculate the volumetric flow rate, Q, through the system and the corresponding head loss for h=400 ft...
Electricity production requires the construction of very big and expensive power plants. Let's say a nuclear power plant costs $100 million. Once it's built, the only input required is very small amount of labor- one person sits in a room and watches a screen to make sure nothing terrible happens. This person is paid $10/hour ($80 per day). The power plant can produce 100,000,000 watts of electricity a day. (A "watt" is how we measure electricity 100,000,000 is 100 "megawatts".)...
QUESTION 12, 13, 14????
In 3.14, can write Gt and Gr directly in the answer, or assume
Gt and Gr =1 (specify hypothesis)
P3.8. Path loss, fading, and delay spread are the three most important radio propagation issues. Explain why those issues are important in a cellular system. What is the difference between fast fading and slow fading? Р3.9. How is radio propagation on land different from that in free space? What does a small delay spread indicate about the...
QUESTION 1 Anna the Audiophile has asked for your help to build an amplifier and filter to take small signals from her hifi system and amplify them so that she can drive her new subwoofer. The hifi system produces AC signals at varying frequencies with 250mVrms maximum magnitude Her subwoofer requires the signals to be 20 Vrms maximum magnitude. The signals that Anna is interested in are below 200 Hz. She would like the filter to attenuate signals at frequencies...
QUESTION Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from his bird sensing microphones and amplify them so that he can capture the signals on his PC. The microphone produces AC signals at varying frequencies with 10 mV magnitude. His PC requires the signals to be 1 V magnitude. The signals that Bary is interested in are above 1 kHz Hz. He would like the filter to attenuate signals at...
QUESTION 1 Barry the Biologist has asked for your help to build an amplifier and filter to take small signals from his bird sensing microphones and amplify them so that he can capture the signals on his PC. The microphone produces AC signals at varying frequencies with 10 mV magnitude. His PC requires the signals to be 1 V magnitude. The signals that Barry is interested in are above 1 kHz Hz. He would like the filter to attenuate signals...
I am completing a study guide for the next section of class
because I am trying to get ahead. Any suggestions?
A wave whose displacement velocity is either in the same direction or opposite direction as the wave velocity describes which type of a wave? a. Transverse wave b. Mechanical wave c. Longitudinal wave d. Electromagnetic wave Which of the following are always one wavelength apart and are drawn as parallel lines? Plane waves b. Wave fronts c. Wave phase...
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