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  1. Angular speed is in radians, so divide the linear speed by the radius. (3.7) / (15) = 0.247, in whatever units you're using.

    2 Answers · Science & Mathematics · 07/06/2010

  2. the x component of Vi = 18.7@31.0 deg is 16.03 m/s so t = d / Vx = 29.0 / 16.03 = 1.329 s and the initial y component is 9.631 m/s so using the time from above Vyf = Vyi + g t = 9.631 + (-9.81)(1.329) = -3.4065 m/s combining the final x and y components (16.03...

    2 Answers · Science & Mathematics · 01/02/2011

  3. first calculate the time it took for sound to travel 45m v = d/t so t = d/v t = 45/330 t = .13636 secs subtract this time from the total time t = 1.45989 - .13636 t = 1.32353 secs last, using the remaining time, find the average velocity of the thrown ball v = d/t v = 45/1.32353 v = 34 m...

    3 Answers · Science & Mathematics · 22/12/2012

  4. Helium is monoatomic. While Hydrogen is diatomic. Therefore, Since the molecular weight Helium is 2 and a diatomic Hydrogen is 2. I believe the speeds should be exactly the same. EDIT...

    2 Answers · Science & Mathematics · 12/11/2012

  5. a) The work done by the horizontal force = F*d*cos(theta) Here: F = 80 N, d = 4.8 m (displacement), theta = 39 degree (angle between the force and the direction of motion). Therefore W = (80)(4.8)(cos39) = 298 J b) To find the final kinetic energy we will find the...

    2 Answers · Science & Mathematics · 01/11/2012

  6. For a solid sphere, I = (2/5)mr² and rotational KE = ½Iω² = ½ * (2/5)mr² * (v/r)² = (1/5)mv² So: translational KE = ½ * 7.1kg * (4.6m/s)² = 75 J rotational KE = (1/5...

    2 Answers · Science & Mathematics · 09/11/2013

  7. v^2=u^2 + 2as (3rd equation of motion) where v=final velocity (0); u = initial velocity; a=acceleration (-10 m/s^2) and s=distance (320m). So u^2 = 2as = 2 x 320 x 10 = 6400. This gives u = 80 m/s

    3 Answers · Science & Mathematics · 12/09/2006

  8. AN 83.....? (83 + 136) = 219kg. (15 x 4.4)/219 = 0.3m/sec., left.

    2 Answers · Science & Mathematics · 05/10/2012

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