The Battle of Britain was one of the great turning points of WWII. The air battle -- fought largely over Southern England -- was a vital victory for the Allies. From a morale point of view, it proved ...
If you’ve been burning the midnight oil building a new machine, modifying an existing implement to transform its performance, ...
When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.
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