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  1. ...velocity of the arrow as it leaves the bow? The work that is done by the bow is equal the kinetic energy of the arrow. Work = ½ * 275 * 0.85^2 = 99.34375 KE = ½ * 0.125 * v^2 = 0.0625 * v^2 v = √(99.34375 ÷ 0...

    2 Answers · Science & Mathematics · 11/11/2017

  2. ... you never reach terminal velcoity! But you could get within (say) 99% of it, or (say) 99.999999% of it - depending how long you fall for. We...

    6 Answers · Science & Mathematics · 19/10/2017

  3. ...adjust the whole resistance within fine tolerances. eg if I had a 1 ohm potentiometer in series with a 99.5 ohm resistor then I could vary the resistance from 99.5 up to 100.5 using...

    2 Answers · Science & Mathematics · 05/10/2017

  4. ...sin19.0°) ± √[(7.03 sin19.0°)² + 4(1/2)(9.81)(24/0)]} / [2(1/2)(9.81)] t = 1.99 s or t = -2.46 s (rejected) Time taken = 1.99 s (b) ...

    3 Answers · Science & Mathematics · 24/09/2017

  5. ..., where kₑ is Coulomb's constant (kₑ = 8.99×10⁹ N m² C⁻²) q₁ and q₂...

    1 Answers · Science & Mathematics · 08/09/2017

  6. ... of 3 quarks each. However, the quarks represent only 1% of the mass of a proton or neutron. The rest of the mass (99%) comes from the binding energy of the gluons of the strong nuclear...

    2 Answers · Science & Mathematics · 04/08/2017

  7. ...1 rev/s = 2π rad/s The work done will equal the kinetic energy gained: W = ½Iω² = ½ * 4.05*10⁴ * (2π)² = 7.99*10⁵ J If ...

    1 Answers · Science & Mathematics · 10/04/2017

  8. I'll just use different values to illustrat the method. ______________________________________ Find the magnitude of the electric field at a point midway between two charges qA = +50e−9 C and qB = +70e−9 C separated by a distance of 20cm. qA...

    2 Answers · Science & Mathematics · 01/04/2017

  9. ... v = √(8.99² + 1.97²) v = 9.2 m/s at an angle of tanθ = -1.97 / 8.99 θ = -12.364° I don't know how that is supposed to round...

    2 Answers · Science & Mathematics · 15/03/2017

  10. ...solve for V4 0.023(270) + 0 = 0.023(140) + 3.0 V4 3.0 V4 = 2.99 V4 = 1.0 m/s to 2 sig figs When you get a good response, please consider...

    2 Answers · Science & Mathematics · 07/03/2017

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