General physics Definition and 155 Threads

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    General physics: Someone please explain what a short circuit is

    General physics: Someone please explain what a "short circuit" is I am currently reading electricity and although I have read my textbooks well, I still don't understand what a "short circuit" is..thanks :cry:
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    Solving for Distance and Speed in Physics Problems

    Hi, I have 2 questions... 1. If a carnival swing is fixed on the end of an 8.1-m-long beam. The swing and beam sweep through an angle of 120 degrees. How do i find the distance through which the riders move? 2. A car is safely negotiating an unbanked circular turn at a speed of 34...
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    How much energy is needed to melt a 50kg snowman at -2 degrees Celsius?

    I have a simple physics problem I'm not sure how to solve. A child builds a big snowman which contains 50kg of snow. How much energy would it take to melt it from an initial temperature of -2 degrees Celsius?
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    How Is Speed Accuracy Measured in Bicycle Computers?

    i have these questions for homework and they been bugging me any help on working them out will be greatly appreciated 1. Speed is displayed on a bicycle computer to within 0.1 km/hr (about 0.03 m/s). However we are puzzled how this accuracy is obtained. Measurements are updated each second...
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    How Does Propeller Size and Placement Affect Water Surface Speed?

    Water Propeller -- General physics questions Howdy, I have been following the boat bike concept for a few days and am interested in finding out more on how to get better water surface speed. The props on these bikes look small and the specs are touting no more than 10 km/h. Can anyone...
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