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  1. ...13.6eV * 1.6e-19J/eV = 2.176e-18 J so 9.17063e-20 J = 2.176e-18J * (1/n² - 1/7²) means that 1/n² = 0.0626 1/n = 0.25 n = 4 Hope this helps!

    1 Answers · Science & Mathematics · 27/04/2020

  2. ... max KE = ½ * 0.2035kg * (2.80m/s)² = 0.799 J which is equal to the max PE: 0.799 = ½ * 12N/m * A'² new A' = 0.36 m

    1 Answers · Science & Mathematics · 12/05/2020

  3. ... at amplitude E = ½ * 10kg * (8m/s)² = 320 J a) 320 J = ½ * k * (4.2m)² and so k = 36.3 N/m which should probably be rounded to 36 N/m b) period T = 2π...

    1 Answers · Science & Mathematics · 28/04/2020

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