Physics of Mining Essay - 809 Words

Mining is a necessary component of the world we live in and it has been practiced for thousands of years. The mining industry produces billions of tons of raw product every year. The process of mining is very complicated and involves plenty of physics! Two main components of the mine cycle are: Drilling, and Blasting. Some important factors in mining are the pillars, rock elasticity, and the slope stability of the ground being mined. A basic method for destroying rock is mechanically induced stress, such as drills and erosion jets. A turbine drill for example, uses a turbine to rotate a diamond faced cutter wheel. The power output, p, can be calculated using the equation p=2 Ï€NT where N is the rotational speed of the turbine and T is†¦show more content†¦It is normal for these shearers to have up to 1 megawatt of power! Blasting is used in mining to break up rock or create space. Explosives are placed in a blasting hole and then detonated. The velocity of the detonation of the explosives are enormous. The detonation of a common explosive such as ANFO (an agent consisting of ammonium nitrate prills and fuel oil) can reach velocities of 5,000 m/s in a 375 mm blasting hole. Blasting is very dangerous because it produces fragments of rock moving at high speeds called flyrock. There have been cases of flyrock weighing up to 500 kg being projected almost a full kilometer! It is often necessary for miners to take into account the resistance of rock bodies to compression and distortion when placed under stress. The ability of a body to resist forces is determined by elasticity. The three moduli of elasticity are: Youngs Modulus: E= (Applied force/Area) / (Change in length/original length) Shear Modulus: G= (Applied force/unit area) / (Angular deformation) Bulk Modulus K= (Force/unit area) / (Change in volume/unit volume) Youngs Modulus measures the ability of a body to resist elongation or shortening. 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Lab Experiment Coin Lab - 950 Words

Coin lab My group decided to look at how yeast would be transmitted by passing the coin without washing our hands. We also decided to look at how the yeast would be transmitted if a member of our group touched the coin and then a different member touched the fingertip of the person who touched the coin. Our final experiment was to see how the yeast would transmit if we did wash our hands. With our first experimentation, the group noticed that there was a lot of bubbling in the peroxide after it had been passed down from person to person. However, it was noticed that the bubbling of the peroxide took much longer periods of time depending on the person. For example, the sample from person 1 bubbled slower than the sample from person 2 since less yeast was present on the coin. 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Music Concert Paper Essay Example For Students

Music Concert Paper Essay She then became a teacher of music that was also, the former Principal Horn of the Metropolitan Opera. The instruments that were used, the trumpet and the horn are considered part of the Brass family in music. The entire recital performance was about an hour and a half long. I was mostly surprised that the performance started on time. In addition, there werent any introduction of the performance at the start of the show. Or did they announce who was coming out to begin. The lights were dimmed to indicate the show was about to egging. The sitting of the concert hall was very different from any other show that I attended. The audience was seated in a semi-circle, facing the stage. The audience consisted of many students, elders, middle aged Caucasian people, and families. There were also several microphones hanging from the ceilings. As the performance entered the stage, they were both dressed in dark suits with white shirts. They were similar to watching an entire orchestra play in a concert hall. The concert was divided into seven recitals. The first piece played was by Gabriel Fare. According to the Wisped, he was a French composer, organist, pianist and teacher. He was also one of the foremost French composers of his generation, and his musical style that influenced many in the 20th century. Mr.. Fare was also known for one his most famous vocal pieces that were composed of caked Par ©s UN rev ©. These were poems of songs. They was referred to the English definition which mean after a dream. Due to the fact that the song originally was a poem, the meaning had a strong interpretation. The interpretation the song was described as a romantic an awakening light. The song was written between 1870 and 1878. It consisted off set of melodies for a solo voice and a piano. In my opinion, this performance the Horn, played by Tremor Knuckles was the solo voice. While the piano, in this case, the Organ was played by David Ball. As the first piece begins, both the trumpet and organ start to play at the same time. The time signature for this piece was played in 4 over 4 in each measure. The music starts off in quarter notes, as if you were listening to marching sounds. In my opinion, the piano dominated the music in this piece. The diatonic scale went from soft sounds to extremely high-pitched notes. The repetition of the music was sequential. In my opinion, this style of music was used to have the melody to make you feel like something devastating is about to happen. The rhythm of the music felt gloomy and depressing. The entire piece felt dark and cold. The piece played was not my favorite. When I listen to music, I want to feel like I am relaxed. I also listen to music to feel uplifted. Even though, it is believed that this was one Gabriel Fare most famous pieces. I felt that want to feel the happiness in his this piece. Although, we listened to five additional recitals, my favorite piece of music that was played at the end of the performances. It was entitled Toccata and Purge. It was composed by Johann Sebastian Bach. According to Wisped, he was a German composer, organist, harpsichordist, violist and violinist of the Baroque Period. The song Toccata and Purge in D minor was also considered to be one of his most famous pieces of organ music. However there is no autograph manuscript of the Bow 565 that exist. The piece as performed by Tremor Knuckles, David Rachel, Andrew Fierier and Kelly Classical Minsk. Again, they were all students at the Jailbird School for Dance, Drama and Music. The piece was my favorite because of many things. It all of the students played the horn collectively. There wasnt the piano or organ playing at the same time. In this piece, I was able to concentrate on one sound of the horn. It was the dominating instrument because there were four of them playing in sequence at the same time. It was fascinating. The measures of the music ascended from high to low. .u13d0de55186cdc9260c78879c0739a5c , .u13d0de55186cdc9260c78879c0739a5c .postImageUrl , .u13d0de55186cdc9260c78879c0739a5c .centered-text-area { min-height: 80px; position: relative; } .u13d0de55186cdc9260c78879c0739a5c , .u13d0de55186cdc9260c78879c0739a5c:hover , .u13d0de55186cdc9260c78879c0739a5c:visited , .u13d0de55186cdc9260c78879c0739a5c:active { border:0!important; } .u13d0de55186cdc9260c78879c0739a5c .clearfix:after { content: ""; display: table; clear: both; } .u13d0de55186cdc9260c78879c0739a5c { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u13d0de55186cdc9260c78879c0739a5c:active , .u13d0de55186cdc9260c78879c0739a5c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u13d0de55186cdc9260c78879c0739a5c .centered-text-area { width: 100%; position: relative ; } .u13d0de55186cdc9260c78879c0739a5c .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u13d0de55186cdc9260c78879c0739a5c .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u13d0de55186cdc9260c78879c0739a5c .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u13d0de55186cdc9260c78879c0739a5c:hover .ctaButton { background-color: #34495E!important; } .u13d0de55186cdc9260c78879c0739a5c .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u13d0de55186cdc9260c78879c0739a5c .u13d0de55186cdc9260c78879c0739a5c-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u13d0de55186cdc9260c78879c0739a5c:after { content: ""; display: block; clear: both; } READ: Music Unit Text.Doc EssayThe tempo was extremely fast. It sounded like they were playing 16th notes in the piece. In my opinion, the syncopation assimilated the superhero Superman, as he would run into a phone booth to change into his costume to fly up into the sky. I felt a sense of being in a whirlwind, as my heart raced to get out of it. The piece appeared to be motivating, as well as exciting. Overall, my experience at the Gaillardia School for Dance, Drama and Music was very eventful. I enjoyed, as well as respected those who play music to levels of some of the greatest composers of our history have done.