FORESTS; A forest‚ also referred to as a wood or the woods‚ is an area with a high density of trees. Forests cover approximately over 9.4% of the earth’s surface * USES OF FORESTS; Forests are important to the survival of human beings mainly because we are dependent on a significant degree of vast areas of forests. The following states the various uses of forests; * Habitat for wildlife. * Home for plants. * Flora and fauna. * Forest plants can be used for medicinal purposes
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logical connection exist only in the software‚ while a physical connection is one that exist only in hardware 8. How does convergence apply to the communications industry? Ans= In form of media press and public speaking. 9. What is the decibel loss of a signal that starts at point A with a strength of 2000 watts and ends at point B with a strength of 400 watts? Ans= 10*log10
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ULTRASONIC TESTING (UT) USEFUL FORMULAE 1. Velocity of Ultrasonic Waves in a medium (V) = f x l OR W here f = Number of cycles per second is called frequency. Measured in ‘Hertz’. Abbreviated as ‘Hz’. One Hertz is equivalent to One cycle per second l = Distance covered in one cycle is wavelength V= Velocity of Ultrasonic wave inside the medium in ‘mm/s’ 2. A coustic Impedance (Z) = V x r W here: Z= Acoustic Impedance r= D ensity V= Velocity 3. R eflection Coefficient
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Wooden Versus Aluminum Bats What happened to the old fashioned crack of the bat? The wooden bat has been used since the game’s establishment in 1864. An aluminum bat is more dangerous that a wooden bat due to the advanced technology. However‚ I believe that a wooden bat is better than a aluminum bat. The baseball bat controversy has been lingering over amateur baseball since the NCAA (National Collegiate Athletic Association) allowed the use of aluminum bats for the first time in 1974 (Adelson)
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B.Ag.Ali‚ Syazwan Bin Madso‚ Dayang Haniza Binti Awang Patra Abstract: Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Noise can be taken as pollution because it causes disruption which‚ in return may cause hearing impairment at critical conditions. The locations of experiment that were selected are DKP 7‚ DKP 8 and DKP 9 in UMS. At an interval of 5 minutes
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their mood with loud barks or endless whining‚ cats will keep their mood to themselves. Even when cats do whine‚ their meows or hisses are barely audible from another room‚ let alone from the neighbor’s house. An added benefit of your cat’s low-decibels purring is that it’s been shown to reduce stress and blood pressure‚ among other things.” This means cat-owners have peace and quiet. Obviously‚ having some downtime is important. However‚ dog-owners would have to deal with the barking and whining
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loudness‚ Levitin explains that‚ like pitch‚ it doesn’t actually exist. It’s all just vibrations of different intensities perceived as loudness by our brains. Sounds can be louder when they are processed different ways. We measure loudness in decibels. When the decibels reach a certain level permanent damage can be caused. Levitin concludes the chapter by explaining that the different attributes of music combine in many different ways that
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as eyes.Listening to music through headphones at too high a volume is a common habit among the teenagers of the modern life. This practice can seriously damage our hearing. Our ears are accustomed to sounds between 40 to 50 decibels. Listening to sounds between 80 to 90 decibels can
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The Effect of Music in a Developing Fetus Kimberly C. Camacho ENG101 December 16‚ 2012 Asiah Wolfolk-Manning A study that was done by the U.S. Department of Health and Human services (2011) stated that two to three of every 1‚000 children in the United States are born deaf or hard-of-hearing‚ and more lose their hearing later during childhood. As a fetus develops in the mother’s uterus there are things that a mother needs to be concern about. The mother must take care of herself in order
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ENVIRONMENTAL POLLUTION Efforts to improve the standard of living for humans--through the control of nature and the development of new products--have also resulted in the pollution‚ or contamination‚ of the environment. Much of the world’s air‚ water‚ and land is now partially poisoned by chemical wastes. Some places have become uninhabitable. This pollution exposes people all around the globe to new risks from disease. Many species of plants and animals have become endangered or are now extinct
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