Db to watts calculator
[DOC File]Section 1 - Quia
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Use calculator to graph it (the same way we did with lines) ... The turbine generates 750 watts of power in a 25 mph wind. Determine the power it generates in a 40 mph wind. ... (ft) 0.1 0.5 1 2 5 10 20 30 I (dB) What happens to the intensity as you move closer to the person speaking? What happens to the intensity as you move away from the ...
[DOC File]RADAR BASICS - UAH
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The unit of measure on the vertical axis is decibels, or dB, and is the common unit of measure for in radar applications. We define the beamwidth of an antenna as the distance between the 3-dB points of Figure 4. The 3-dB points are the angles where is 3 dB below its maximum value. As a side note, the maximum value of is the antenna gain, or .
[DOC File]FORMULA SHEET - Homestead
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746 Power Factor = Watts (Read on Meter) Measured Volts x Measured Amps. Pump Efficiency = (Water) Horsepower x 100 ... (Leaving Db– Coil Temp)÷(Entering Db–Coil Temp) Example: (55-35.5)÷(70-35.5)= 0.565 ... To save time when converting velocity pressure into air velocity, the Dwyer Air Velocity Calculator may be used. A simple slide rule ...
[DOC File]Activity: Analyzing the Relationship between Logarithmic ...
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dB = 10 log (I / Io) where dB represents decibels, I is the intensity of the sound in question (measured in joules per second per square meter), and Io (read as "I naught" ) is the softest sound the human ear can distinguish, being 10-12 joules per second per square meter.
[DOC File]WinSpeakerz Demo User’s Guide
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WinSpeakerz has two choices for the frequency response scale: 0 dB Mode and dB SPL Mode. While the 0dB scale is normally used to quickly locate the -3dB and -10dB frequencies on the response curve, the dB SPL scale is useful for showing how loud the speaker can play at full power, or at any power level you enter in the P(in) field of the Driver ...
[DOC File]FDR PROGRAM - United States Department of Commerce
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P is the transmitter peak power density, in Watts/kHz. p (f) is the transmitter relative power density spectrum. By substituting P p (f) for S (f), equation 7.3 becomes: OFR ( f) = 10 log10 (2.9) However, for practical applications, the transmission emission spectrum and receiver selectivity are given in dB …
[DOC File]Bridging The Gap
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A quick check with a transmission line program shows that on 3.820 MHz, using 100 ft of RG-8X coax, the high SWR adds 11.6 db of loss on top of the basic 0.4 db matched loss of the coax. The total 12 db of loss means that your 100 watt transmitter is only getting 6.3 watts into the antenna.
[DOC File]The mathematics of Safety Abstract
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N0=10-12 watts/m2. L=10log(N/ N0) ex: A jet aircraft has sound power of 105watts/m2. L=10log(105/10-12) =10log(1017) =170 dB. Suggested timeline: Review the concepts: measures of central tendency, measures of spread, graphical displays of data, and use of a graphing calculator …
[DOCX File]University of Colorado Boulder
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Do the dB calculations of Problem #1 USING A CALCULATOR. Make a table showing the estimated results from your answers, and the "actual" calculated values. While we learned that you usually don’t need a calculator to estimate dB values, let’s get a little practice using our calculators in this regard.
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