Alpha Geek

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About Alpha Geek

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Teaching Since: Apr 2017
Last Sign in: 438 Weeks Ago, 1 Day Ago
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Education

  • bachelor in business administration
    Polytechnic State University Sanluis
    Jan-2006 - Nov-2010

  • CPA
    Polytechnic State University
    Jan-2012 - Nov-2016

Experience

  • Professor
    Harvard Square Academy (HS2)
    Mar-2012 - Present

Category > Applied Sciences Posted 20 May 2017 My Price 7.00

From the top of a 70-meter-high building

From the top of a 70-meter-high building, a l-kilogram ball is thrown directly downward with an initial speed of
10 meters per second. If the ball reaches the ground with a speed of 30 meters per second, the energy lost to
friction is most nearly (A) 0J (B) 100 J (C) 300 J ( D) 400 J (E) 700 J
56. A pendulum consists of a ball of mass m suspended at the end of a
massless cord of length L as shown. The pendulum is drawn aside
through an angle of 60° with the vertical and released. At the low point
of its swing, the speed of the pendulum ball is
(A) gL (B) 2gL (C) ½gL (D) gL (E) 2gL

Answers

Alpha Geek
(8)
Status NEW Posted 20 May 2017 10:05 AM My Price 7.00

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