Graphing a Wave Essay

Name: A vibration is a wiggle in time; a wave is a wiggle in space and time. In this exercise, you will explore that connection by transferring the motion of the second hand of a clock (a vibration, even if a slow one), to a wave. Print out the image of a clock and open the spreadsheet called Grapher. You will find both of them in the same item where you found these instructions. Use a metric ruler to measure the displacement of the tip of the second hand every five seconds. That’s the distance above or below the center line that connects the 3 and the 9. Count the number as positive if the tip is above the line (towards the 12) and negative if below (towards the six). Enter each value in the tinted boxes in the Grapher tool and it will immediately plot them for you. Then answer the questions based on your graph. 1) What is the period of this wave, that is, the time for one complete cycle, in seconds? The period of the wave is .02 seconds 2) What is the amplitude of the wave? The amplitude is .01 3) If we had started from some other initial position – say, when the second hand was on the 3 – would the period still be the same? no yes X 4) Again, if we had started when the second hand was on the 3, would the amplitude still be the same? no yes X 5) So – again, if we had started when the second hand was on the 3, what would be different? Though we are starting from a later point, the period would still be the same distance, and amplitude is reliant on the period so if the period is the same then so is the amplitude. Simply the seconds from which we start measuring would be one notch behind, so the arch of each wave would be 5 seconds earlier. 6) Using the period from question 1, find the frequency of the wave. That frequency is of course way too low for us to hear. Please round you answer to three digits, not counting the starting zero; that is, round it to four decimal places total. The frequency is .0125 Hz 7) If you had used the same picture of the same clock but had graphed the minute hand instead, what would change about the graph? Nothing would change at all. The frequency would change. The amplitude would change. X 8) If you had plotted the motion of the second hand on your watch instead of the clock that you printed out, what would change about the graph? Nothing would change at all. The frequency would change. X The amplitude would change. 9) Since you are plotting displacement on the y-axis and time on the x-axis, this is an example of a _____ graph. Snapshot X frog-on-a-post 10) Are you old enough to remember the 90’s television series Home Improvement, starring Tim Allen? He was always saying â€Å"more power† and blowing up one electric tool or appliance after another by trying to make it  work faster. Suppose that he was able to make a clock run so fast that the second hand made one full lap in only one-tenth of a second (0.10 s), and suppose that it tapped a water surface each time it reached the bottom of its motion. If the waves it produced were 4.0 cm apart, at what speed (in cm/s) would they travel? The Waves would travel 40cm/s

Change in Medical Marijuana Essay

Change in Medical Marijuana Essay Change in Medical Marijuana Essay Final Draft May 3, 2013 Barrett, D. (2009, Feb. 7) Change in U.S. Medical Marijuana Policy Likely The Times West Virginian Retrieved 4,29, 2013 From, Http//:timeswv.com/headline news/x681698441/change-in-us-medical-marijuana-policy-1 A hopeful change in U.S. medical marijuana policy is likely, (Barrett, D 2009) to happen. The White House and Drug Enforcement Administration will not say for sure, but there could be some changes made. In 2009 it was said that, â€Å" Experts believe the Obama Administration will change the strategy and the law on medical marijuana†. (Barrett, D. ) 2009). â€Å" The President believes that federal resources should not be circumventing state laws, and as he continues to appoint senior leadership to fill out the ranks of the Federal Government, he expects them to review their policy with that in mind† said White House spokesman Nick Shapiro (Barrett, D. 2009). Thirteen states have laws permitting the use of medical marijuana: California for instance is unique for the presence of dispenser Aries, and businesses that sell marijuana, though dispensaries are illegal under federal law. It might be the law, â€Å"but contradicts the medical marijuana position of the power of the new president† (Barrett, D. 2009). Over time the Obama Administration eventually will instruct the Department of Agriculture empathetically to cut back on raids of dispensaries to conduct raids only on businesses. Who is to say the government can play the role of God and decide if a person is in pain or not? West Virginia is not one of the thirteen states medical marijuana is legal, it should be. I am speaking from experience with my mother who had multiplemyoloma, who was in a lot of pain, and

White Surname Meaning and Origin

White Surname Meaning and Origin The White last name has several different possible origins: White is usually a descriptive name or nickname given to a person with very light hair or complexion, from the Middle English whit, meaning white.The last name White may be also local, derived from the Isle of Wight, on the coast of Hampshire, England.In addition, some Whites originally were Wights, from the Anglo-Saxon wiht, meaning valiant. White is the 16th most common surname in England, the 20th most common last name in America, and the 10th most popular name in Australia. Surname Origin:Â  English, Scottish, Irish Alternate Surname Spellings:Â  WHYTE, WHIET, WIGHT, WHYTTE Fun Facts About the Last Name Albus is the Latin form of the White surname. Famous People With the Surname Governor John White - governor of the failed Roanoke ColonyReggie White - NFL football legend, Pro Football Hall of FameEdward Higgins White II - American astronaut; died 1967 in the Apollo 204 fire at Cape Kennedy, FloridaStanford White - American architect Genealogy Resources for the Surname White Surname DNA ProjectThe goal of the the White surname project is to distinguish between White ancestral lines worldwide. White Family Genealogy ForumSearch this popular genealogy forum for the White surname to find others who might be researching your ancestors, or post your own White query. There is also a separate forum for the WHYTE variation of the White surname. Source: Cottle, Basil. Penguin Dictionary of Surnames. Baltimore, MD: Penguin Books, 1967. Menk, Lars. A Dictionary of German Jewish Surnames. Avotaynu, 2005. Beider, Alexander. A Dictionary of Jewish Surnames from Galicia. Avotaynu, 2004. Hanks, Patrick and Flavia Hodges. A Dictionary of Surnames. Oxford University Press, 1989. Hanks, Patrick. Dictionary of American Family Names. Oxford University Press, 2003. Smith, Elsdon C. American Surnames. Genealogical Publishing Company, 1997.

Has the United Nations Failed to Fulfil Its Founding Promise to Research Paper

Has the United Nations Failed to Fulfil Its Founding Promise to Maintain International Security - Research Paper Example For the first time in the history of wars, America used nuclear weapons in WW2 and the world witnessed the destructive power of the nuclear weapons for the first time. Moreover, the potentials of a simple regional conflict in becoming a global conflict were also revealed to the external world through Second World War. Many countries forced to take part in the WW2 because of circumstantial pressure. The failure of League of Nations in preventing WW2 forced the global leaders to think in terms of a more powerful global body and the result was the formation of UN. Different subdivisions such as The General Assembly, The Security Council, The Economic and Social Council, The Secretariat, and The International Court of Justice etc were also formed inside UN in order to manage international disputes of various kinds. However, UN has failed to settle many of the international disputes developed after its formation and it failed to fulfil its founding promise to maintain international securi ty. UN & International security The 1971 Indo-Pakistan war is one of the major examples in which UN failed to interfere effectively. In 1965 also, both India and Pakistan engaged in a severe battle for the ownership of disputed Kashmir. Until now, Kashmir dispute has not been solved amicably and India and Pakistan come closer for a third battle recently after the 2008 Mumbai terrorist attack. In one of the recently revealed cables, WikiLeaks revealed how India and Pakistan responded immediately after the 26 November, 2008 Mumbai attack by Pak terrorists. In the days immediately after 10 Pakistani Lashkar e Taiba terrorists killed 166 people in Mumbai, a man pretending to be India's then External Affairs Minister, Pranab Mukherjee, called Asif Zardari, Pakistan's president, to warn it was about to launch a military response. President Zardari immediately contacted the country's military leadership and ordered its air force to be put on high alert to confront a possible Indian attack. He also mounted a diplomatic campaign to put pressure on India withdraw its "threat"(Nelson, 2011). Irrespective whether the revelation of WikiLeaks is right or wrong, one thing is sure; India and Pakistan came much closer for a war after the Mumbai terrorist attack and the international community is responsible for avoiding this war. United Nations has not shown many interests in preventing this war. In fact none of the UN officials have shown any interest in this issue. The disputes between India and Pakistan are widening gradually and international community is afraid of a possible war between these two nuclear powers in the near future. Even at the time of writing this paper 9on September 7 2011), televisions flash news show that more than 10 people were killed and around 50 people injured in Delhi because of a bomb blast suspected to be conducted by the Pak terrorists. It should be noted that in the five years alone, India suffered three or four major terrorist attacks from Pa kistan. All these terrorist attacks were happened because of the disputes over Kashmir. UN seems to be not learning lessons from past experiences. It should be noted that UN failed to prevent two Indo Pak wars and it is doing nothing to prevent a third possible war between these two Asian powers. The 2001 World Trade Centre attacks and the subsequent development of war on terror in Iraq and Afghanistan is another example for the failure of UN. It should be not