Decibel Portfolio Essay

The graph shows a linear relationship between light intensity between 0-150 µmoles photons m-2s-1 until the rate of oxygen production slowed between 150-350

These parts make up the sound waves and they travel through a medium which is the material that a wave energy travels through. On page 10 in Activity 2 we had to fill out the table on how to make a louder sound and we learned that to have a louder sound the compressions have to be larger and to increase the frequency the compressions also had to be larger. When we did the activity with the slinkies this was the case because when we had more compressions the sound was louder and the frequency increased. In Activity 1 on page 4 we learned that sound intensity is how much sound energy passes through a certain area in a certain amount of time as it spreads out from the source. Decibels are a unit of measure that indicates the relative intensity of a sound. In Activity 1 on page 5 when we were looking at the table it showed us that as the sound intensity increases the decibel increases because the decibel measured how intense the sound was. According to the chart on page 4 the decibels at a quiet library is 40 dB and the relative intensity is 1000, however if the noise source is some explosions then the decibels is 160 and the relative intensity is

= 10% , Medium = 50%, and High = 100% Impact: Low = 10, Medium = 50, and High = 100

George Saunders writes about human behavior with some modern and not so modern examples. He invites the reader to imagine themselves at a party where someone is speaking into a megaphone. Soon the focus of the party becomes the topic the megaphone speaker is flooding into the party atmosphere. Saunders also talks about new broadcast,he mentions a news reporter reporting busy shopping activity at a mall during holiday season . What a surprise!

From the graph, R2 can be extrapolated from the y-axis and the corresponding value on the x-axis (the point of intersection on the curve) gives the concentration of the unknown solution.

Introduction: Today scientists put acquired data into a form of a graph. This said graph is designed to help make predictions and furthermore, study and understand the experiment and its contents at hand. The Graphing and Estimating lab involves just that. The lab is designed to collect data from several tests involving burn time of a candle.

For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output; this information is needed in order to receive full credit on these

5) Describe how the normal range for any given measurement is obtained. Explain why published values for normal ranges may differ and why these values must be continually checked and updated.

1. Are any of the lab values in Table 1 out of normal range? Do you see some that are too high or too

In this experiment, the signal generator was set so that the frequency meter showed a reading of 1,803 Hz. The microphone was moved to a distance from the speaker so that the oscilloscope displayed a straight diagonal line. This position was of the microphone was recorded as the initial position, or beginning of a wavelength. The microphone was then moved farther in the same direction until the oscilloscope displays the same horizontal line. This position was recorded as final position, or the end of the wavelength. The distance between the two positions represents one wavelength for this frequency. This was repeated for frequencies of 2,402 Hz, 3,002, Hz, 3,602 Hz, and 4,201 Hz.

Question 4: The mode is the most frequently occurring value in a set of data so here the mode is 178 so the answer is e.

3) What do the rate of change values you just calculated represent? Why are some positive and some negative?

This paper comprises an appreciation of data representation, its visualization, an outline description of behavior, plus an indication of the use of the equation in engineering.

Hearing loss is the most common physical disability in the whole wide world. In the United States alone, about 28 million people have some level of hearing impairment that interferes with their ability to understand normal speech and participate in conversations. Another 2 million cannot hear at all.

where dPmax is the maximum change in pressure, k is angular wave number, and w is angular frequency.