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  1. ... = Fc so kQq / r² = mv²/ r v² = kQq / mr A convenient quantity...to eV, divide by 1.6e-19) 2) PE = kQq / r = 2.30e-28N·m² / r a) 4.34e-18 J = 27.1 ...

    1 Answers · Science & Mathematics · 27/09/2020

  2. ... between two masses is G m1 m2/ r ^2. New mass is m1/2 and m2/2, r =2r. ... and vice versa. a is the correct answer. 3. pi r ^2 is the area of collection. If the diameter ...

    1 Answers · Science & Mathematics · 28/09/2020

  3. ... orbit, electrostatic force = centripetal force kQq / r² = mv²/ r so v² = kQq / mr Total energy of orbit = kinetic + potential...

    1 Answers · Science & Mathematics · 26/09/2020

  4. a) Horizontal Range = v²sin2θ/g R = 50²sin(2*25)/ 9.8 R = 195 m b) Total time, T = 2vsin...

    1 Answers · Science & Mathematics · 24/09/2020

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