What is the difference between a vector and a phasor?
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assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?
Why dies a boat-man push the bank with an oar, when he wants to clear his boat off the bank?
What is Pressure ?
Which lens is used for correcting short ?sightedness ?
Explain what is the heterogenous?
Why does a water pump becomes ineffective, when water ha to be raised through a height grater than 30 ft. ?
When a gun is fired, why does the guner receive the jerk ?
What is Real image ?
What secondary color of light is produced by mixing the primary colors of red and blue?
Describe the Periscope?
Explain the Light ?
what is momentum?