Perambatan dan Sifat Gelombang Bunyi

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Simply by filling out an application, you’ll get two free weeks of enrollment, including lectures and discussions with your potential instructors and classmates. This free trial period could be just what you need to decide to complete an affordable, fast online degree at NPC. Net Price: $13,709/yr Score: 69.33 American Public University System Online Fast Degrees Students who are eager to earn an affordable fast online degree can enroll at APU as early as next month. 4. AMERICAN PUBLIC UNIVERSITY SYSTEM Website APUS has been serving non-traditional students since 1991, well before online education became mainstream. Originally founded as American Military University to cater to mobile military learners, it reorganized into APUS in 2002 in order to serve a wider range of learners – and today 42% of its students are civilians. Even so, American Public University continues to enroll more members of the armed forces than any other school. Although it offers nearly 200 degrees and certificates, the school’s most popular programs include business administration, criminal justice, general studies, sports and health sciences, psychology, and homeland security. With courses starting on the first Monday of every month and lasting either 8 or 16 weeks, there’s no need to wait for a new semester to begin, earning APUS a top spot in our fast online degree rankings. Net Price: $9,572/yr Score: 70.60 American InterContinental University Fast Online Degrees Accredited, fast online degrees are in abundance at AIU, which offers programs in everything from business to web design. 3. AMERICAN INTERCONTINENTAL UNIVERSITY-ONLINE Website In addition to the career-focused fields found at other online schools – business, criminal justice, IT, education, and healthcare – AIU also has several degrees in design fields, making it a great choice for students who want to blend vocational skills and artistic vision. You can earn a Bachelor of Fine Arts in graphic design, web design, illustration, or even fashion. For students who live in the greater Atlanta or Houston areas and want face-to-face learning and physical classrooms, there are campuses waiting to welcome you. A generous credit-transfer program allows you to save time and money, making this a truly affordable fast online degree. AIU also has a special admissions department just for the military and offers a 45% tuition discount to active service members, as well as a 10% discount for Reserves, National Guard, and their spouses. Net Price: $15,495/yr Score: 71.82 Sessions-College-for-Professional-Design(1) 2. SESSIONS COLLEGE FOR PROFESSIONAL DESIGN Website Speaking of artistic degrees for vocational trades, Sessions is a great choice for students who want an accredited fast online degree in the arts, such as graphic design, web design, digital photography, and much more. Experienced designers can also take quick professional development courses in Photoshop and other specific skills without pursuing an entire degree. This makes Sessions a standout among the many online colleges that offer more traditional programs in professional fields like business, teaching, or information technology. While Sessions offers numerous certificates and associates degrees, students can also earn credits that transfer to bachelor’s degrees at Excelsior College. All courses have three different start dates a year – January, May and September – giving you plenty of flexibility when planning your schedule. Net Price: $12,352/yr Score: 74.74 American Broadcasting School Fast Online Degrees The American Broadcasting School is #1 on this fast online degree ranking and undoubtedly the best option for aspiring journalists. 1. AMERICAN BROADCASTING SCHOOL Website Granting an inexpensive, fast online degree in radio broadcasting, this school offers a fast track to careers in news, sports, talk, or music radio, as well as other creative voice opportunities. The entire program takes just over eight months to complete (71% of students graduate), uses exclusively one-on-one instruction, and allows you to work at your own pace. You’ll get all the software and equipment you need (as long as you provide your own computer) and personalized vocal coaching. Starting in your very first week, you’ll have the opportunity to record your own radio shows and receive live critiques from professional instructors. Because success in broadcasting requires more than just talent, you’ll also learn digital production, marketing, and other tools of the broadcasting trade. Looking to enroll quickly? You can begin on any Monday of the year! Net Price: $9,459/yr Score: 82.13 See our methodology page for more information about how we calculated this ranking.* *For this ranking, we added an extra feature to the standard methodology. Because we wanted to focus specifically on “speed” rather than general measures of quality, we custom-designed a scale to rank schools based on this highly desirable “fast factor.” Specifically, we researched each online college and asked ourselves the following questions: Does the school offer bachelor’s degrees that one could complete in less than four years? What about associate’s degrees in less than two years? Are there many short certificate options for students who want to quickly augment their skills in an established field? Are there “accelerated” degree paths and options for students who want to earn a combined bachelor’s/master’s degree? Does the school offer credit for life/work experience and past academic coursework in order to help students move ahead on their degree path? Does the school offer multiple course formats so that students have the option to start several times a year and/or to choose between classes of varying lengths? But don’t worry – we still considered graduation rate and tuition costs as well! We hope this has been helpful in providing information about fast online degrees from accredited colleges. There are many fast online degree programs available, and we encourage you to do a broad search to find the program that’s best for you. THIS CONCLUDES OUR RANKING OF THE BEST VALUES IN FAST ONLINE DEGREES. Sources: College Navigator By CVO Staff Published March 2016

Perambatan dan Sifat Gelombang Bunyi Selamat datang di Lahiya, situs (blog) sederhana yang berbagi ilmu dan pengetahuan dengan penuh keikhlasan. Dan, pada kesempatan kali ini, kami bakal sharing pengetahuan mengenai Perambatan dan Sifat Gelombang Bunyi yaitu pemantulan gelombang bunyi, pembiasan gelombang bunyi, difraksi gelombang bunyi, interferensi gelombang bunyi dan resonansi.

Bunyi Merambat Sebagai Gelombang Longitudinal

Bunyi atau suara yaitu gelombang longitudinal yang merambat lewat medium, yang dihasilkan oleh getaran mekanis serta adalah hasil perambatan daya.

Malignant peritoneal mesothelioma is a rare type of mesothelioma which attacks the lining of abdomen also known as peritoneum. Malignant peritoneal mesothelioma (MPM) is a universally fatal disease affecting 20% to 30% of the mesothelioma cases. It's was first described by Miller and Wynn in the year 1908. According to the statistics, in the past two decades, the incidence of malignant peritoneal mesothelioma cancer has increased. Peritoneal mesothelioma affects the lining of the abdomen also known as peritoneum. The location of malignant cell is human's abdominal lining and because of that, MPM can sometimes known as abdominal mesothelioma. However, most common term used to describe this type of cancer is peritoneal mesothelioma. The main cause of MPM in humans is asbestos. Asbestos typically is the one of most commonly roofing materials since it is not only cheaper but is easy to fix on a roof. Asbestos exposure contributed to almost 70 to 80 percent of mesothelioma lung cancer. Humans come into contact with asbestos when they swallow or inhale the fibers. Asbestos inhalation may increase risk to develop asbestos related diseases, most importantly mesothelioma. Asbestos was completely banned in UK since it was recognized to be a serious health hazard, and it is now responsible for about 4000 deaths each year and many cases of serious disease. The people at increase risk of developing health asbestos related disease are those whose work brings them into direct contact with asbestos such as builders, heating engineers, roofers and demolition workers. In addition to mesothelioma, asbestos exposure will increase the risk of other health problems such as lung cancer, asbestosis (chronic lung ailment) and other type of cancer such as larynx and kidney cancer. Symptoms of Malignant Peritoneal Mesothelioma It can takes such a long time for cancer to develop the symptoms and sometimes may take up to 30 years, between exposure to asbestos and the start of the disease. Most common symptoms of the disease are abdominal pain, abdominal swelling, abnormal weight loss, anemia, easy fatigue, nausea and vomiting. Abdominal pain and swelling result from fluid accumulation in the abdominal cavity. Other than that, people can easily get fever when the disease starts to shows its symptoms. Among the symptoms stated above, abdominal pain is the most common reported initial symptoms of MPM. Unexplained night sweats and blood coagulation problems are less frequent symptoms occurring when the cancer develops. If the cancer cells spread to the other part of the body, the symptoms may lead to trouble swallowing or swelling of the neck and face. Diagnosis of Abdominal Mesothelioma It is very difficult to diagnose peritoneal mesothelioma since there is no defined system so far that can differentiate the stages of the development of cancerous tumor cells. If required, TNM staging system normally used to detect the cancer in stages. Other than that, Serum mesothelin-related protein (SMRP) may be a potentially useful serum marker used to diagnose and to follow-up the cancer progression. Computer tomography (CT) findings may be a useful tool in detection and characterization of peritoneal mass. Malignant Peritoneal Mesothelioma is a deadly neoplasm. MPM's diagnosis is difficult to perform since the symptoms will take a long time to show up. Early detection is the key in peritoneal mesothelioma treatment since the cancer cell normally spread very fast. Peritoneal Mesothelioma can be regarded as a very dangerous cancer among other cancer.However we can prevent this problems from occur to you and your family. As i said before, early detection is the key of peritoneal mesothelioma treatment [] success since the cancer cell spread very fast. Get your free update's information about mesothelioma especially mesothelioma treatment by click > mesothelioma [] Article Source: Article Source:

Sumber bunyi sebagai sumber getar memancarkan gelombang gelombang longitudinal ke semua arah.

Gelombang bunyi terdiri dari molekul-molekul udara yang tidak pernah merambat tetapi bergetar maju-mundur. Setiap saat, molekul-molekul itu berdesakan di beberapa tempat, hingga menghasilkan lokasi tekanan tinggi, namun ditempat lain merenggang, hingga menghasilkan lokasi tekanan rendah. Gelombang bertekanan tinggi serta rendah secara bergantian bergerak di udara, menebar dari sumber bunyi. Begitulah argumennya kenapa Gelombang bunyi yaitu gelombang longitudinal.

Karakter – Karakter Gelombang Bunyi

Pemantulan Gelombang Bunyi

Gelombang bunyi tidak berhenti ketika bertemu dengan batas medium atau ketika bertemu dengan satu penghambat, namun bakal memantul. Hukum pemantulan gelombang, sudut datang = sudut pantul juga berlaku pada gelombang bunyi.

Pemantulan bunyi ini bisa digunakan untuk mengukur jarak antara kedua tempat.

Pemantulan gelombang bunyi oleh serta permukaan bakal menghadap pada satu dari dua fenomena alamiah, yakni gaung serta gema.

  • Gaung

Yakni beberapa bunyi pantul bersamaan dengan bunyi asli hingga bunyi asli terdengar tidak jelas. Contohnya di ruangan auditorium kalau dindingnya tidak dilapisi dengan bahan kedap suara.

  • Gema

Yakni bunyi pantul yang terjadi sesudah bunyi yang asli usai disampaikan.

Pembiasan Gelombang Bunyi

Gelombang bunyi yang merambat dari satu medium ke medium lain dengan kerapatan berbeda, bakal mengalami pembiasan gelombang bunyi. Momen pembiasan dalam kehidupan kita, contohnya saat malam hari bunyi petir terdengar lebih keras dari pada siang hari. Hal semacam ini disebabkan karena pada pada siang hari udara susunan atas lebih dingin dari pada di susunan bawah.

Lantaran cepat rambat bunyi pada suhu dingin lebih kecil dari pada suhu panas kecepatan bunyi di susunan udara atas lebih kecil dari pada di susunan bawah, yang menyebabkan medium susunan atas lebih rapat dari medium susunan bawah. Hal yang demikian sebaliknya terjadi saat malam hari. Jadi pada siang hari bunyi petir merambat dari susunan udara atas ke susunan udara bawah.

Difraksi Gelombang Bunyi

Difraksi gelombang bunyi yaitu pembelokan arah gerak gelombang bunyi ketika melalui sebuah celah atau berjumpa dengan penghambat pada lintasan geraknya.  

Gelombang bunyi mempunyai panjang gelombang dalam rentang beberapa sentimeter sampai dengan beberapa mtr. (dibandingkan dengan gelombang cahaya yang panjang gelombangnya kisaran 500 nm). Seperti yang sudah kita pahami kalau gelombang yang panjang gelombangnya lebih panjang bakal gampang didifraksi.

Momen difraksi terjadi contohnya ketika kita bisa mendengar nada mesin mobil di tikungan jalan meskipun kita belum lihat mobil itu lantaran terhambat oleh bangunan tinggi di tepi tikungan.

Interferensi Gelombang Bunyi

Gelombang bunyi mengalami tanda-tanda kombinasi gelombang dengan membutuhkan dua sumber bunyi yang koheren. Interferensi bunyi dibedakan jadi dua yakni interferensi konstruktif atau penguatan bunyi serta interferensi destruktif atau pelemahan bunyi. Contohnya saat kita ada diantara dua buah loudspeaker dengan frekwensi serta amplitudo yang sama atau nyaris sama kita bakal mendengar bunyi yang keras serta lemah secara bergantian.


Resonansi yaitu ikut bergetarnya molekul udara dalam kolom udara akibat getaran benda, dalam beberapa alat musik bakal menyebabkan dampak bunyi yang merdu. Momen resonansi terjadi sesuai sama getaran udara pada pipa organa tertutup. Jadi, resonansi pertama bakal terjadi bila panjang kolom udara diatas air ¼ λ, resonansi ke dua ¾ λ, resonansi ke tiga 5/4 λ, dan sebagainya.

Momen resonansi bisa menyebabkan permasalahan dalam kehidupan sehari-hari. Contohnya, gelas piala bertangkai dapat pecah apabila ditempatkan di dekat penyanyi yang sedang menyanyi. Hal semacam ini terjadi lantaran gelas mempunyai frekwensi alami yang sama juga dengan suara penyanyi hingga gelas mengalami resonansi serta menyebabkan pecahnya gelas itu. Momen resonansi dapat juga mengakibatkan robohnya jembatan gantung bila frekwensi hentakan kaki serentak orang yang berbaris diatas jembatan gantung sama juga dengan frekwensi alami jembatan hingga jembatan bakal berayun hebat serta bisa mengakibatkan robohnya jembatan. Ngeri ya sahabat : 3

Sumber Bunyi

Sumber bunyi yaitu seluruh benda yang bergetar serta menghasilkan suara merambat lewat medium atau zat penghubung hingga ketelinga.

Bunyi dihasilkan oleh benda yang bergetar. Beberapa hal yang menunjukkan kalau bunyi dihasilkan oleh benda yang bergetar yaitu:

  1. Ujung penggaris yang digetarkan menyebabkan bunyi.
  2. Pada saat berteriak, bila leher kita dipegangi bakal terasa bergetar.
  3. Dawai gitar yang dipetik bakal bergetar serta menyebabkan bunyi.
  4. Kulit pada bedug atau gendang ketika dipukul terlihat bergetar.

Bunyi terjadi bila tercukupi tiga syarat, yakni:

  • Sumber Bunyi

Benda-benda yang bisa menghasilkan bunyi disebut dengan sumber bunyi. Contoh sumber bunyi yaitu beragam alat musik, seperti gitar, biola, piano, drum, terompet serta seruling.

  • Zat Penghubung (Medium)

Gelombang bunyi adalah gelombang longitudinal yang tidak terlihat. Bunyi cuma bisa merambat lewat medium penghubung. Misalnya udara, air, serta kayu. Tanpa medium penghubung bunyi tidak bisa merambat hingga tidak bakal terdengar. Bersumber pada riset, zat padat adalah medium perambatan bunyi yang paling baik dibandingkan zat cair serta gas.


Bunyi bisa didengar jika ada pendengar. Manusia dilengkapi indra pendengar, yakni telinga sebagai alat pendengar.


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