Most popular questions and responses by Alemu
  1. physics

    A string of 8 christmas tree lights connected in series to a 120v source draws a current of 0.75A.can any one show me how to find the resistance of each lights and potential differnces.

    asked on January 4, 2010
  2. physics

    A baseball of mass 250g, pitched with a speed of 40m/s, is caught by a catcher, whose glove moves backward 0.25m while stopping the ball. a)what is the kenetic energy of the ball? b)how much work did the catcher's glove do on the ball? c) what was the

    asked on December 3, 2009
  3. physics

    How long does it take a 1000W electric kettle to bring 1.0L of water to the boiling point if the initial temperature is 15oc and the kettle is made of 400g of iron? Assume that no heat was lost to the surroundings and that the kettle was 100% efficient?

    asked on December 3, 2009
  4. physics

    A horizontal force of 50N is applied to a 2.0Kg trolly, initially at rest, and it moves a distance of 4.0m along a level, frictionless. The force then changes to 20N and acts for an aditional distance of 2.0m. a) what is the the final kinetic energy of the

    asked on December 3, 2009
  1. Math

    The quation i

    posted on May 4, 2019
  2. C++

    Count how many vowels these person name

    posted on December 25, 2018
  3. micro economices

    We can consider the typical consumer to make choices in small units, and having limited budget. So each next unit of money will be spent on the most profitable (maximum utility/unit price, most happiness/unit price) item. Since utility varies (usually

    posted on September 25, 2018
  4. micro economics theory 2


    posted on September 25, 2018
  5. statistics


    posted on December 8, 2015
  6. statistics


    posted on December 8, 2015