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A physics professor demonstrates the Doppler effect by tying a 900 Hz sound generator to a 1.0- m -long rope and whirling it around her head in a horizontal circle at 100 rpm .1. What is the difference between the highest frequency heard by a student in the classroom and the initial frequency of the sound generator?2. What is the difference between the lowest frequency heard by a student in the classroom and the initial frequency of the sound generator? How would the graph of the function y=|x|-4 be affected if the function were changed to y=|x|-1? The perimeter of a rectangular painting is 244 centimeters. If the width of the painting is 51 centimeters, what is the length? oh mbxo ocyocyovkcpcpvpcupvivivv0v0v0v0cy9cicyoxy8cx6f8yc9cpc What is the name of the imaginary line around which the Earth rotates? Among the youth that vape, what percentage smoke e-cigarettes with special flavorings? a 40% b 50% c 85% d more than 95% Chill vibes come vibe with others Alexander Hamilton's biggest challenge was paying off the National Debt and he wanted to start by paying the foreign debt first. True False List examples of symbols in the poem other than the ones discussed on the last screen. Analyze what the symbols you chose might mean. The headline "Grace Academy Takes All-City Championship" belongs on the sports page.TrueFalse can someone please help A circular plate has circumference 33.3 inches. What is the area of this plate? Use 3.14 for Pi.The area of this plate is_____about square inches.(Round the final answer to the nearest whole number as needed. Round all intermediate values to the nearestthousandth as needed.) Why the impact of the loaded truck on a body coming its the way is very large even if thetruck is moving slowly Give an example to illustrate the difference between "paying more in taxes and paying a higher tax rate . The Andersons are going on a longsailing trip during the summer.However, one of the sails on theirsailboat ripped and they have toreplace it. The sail is pictured to theleft. If the sailboat sails are on salefor $2 per square foot, how much willthe new sail cost? Show your work. 4) Here is a list of six famous European cities. Believe it or not, all but ONE of them was founded by the ancient Romans. Tell me the one you think was not a Roman city London, England Paris, France Geneva, Switzerland Venice, Italy Cologne, Germany Antwerp, Belgium Please helpppp!!!!!!!!!!!!!!!!! How much energy is contained in the six-cookie serving size recommended on the label? Someone please help! The graph shows Internet usage in recent years.A line graph titled the Internet's growth shows years on the x axis and internet users per 100 people on the y axis. The line starts at 2 in 1992, to 5 in 1994, 65 in 2004, to 70 in 2006.What is the most direct effect of the trend shown in the graph?A. rising costs associated with Internet usageB. danger to Third World cultures from Western influenceC. the emergence of superpowers in the Third WorldD. an electronic linking of peoples around the world