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Conceptual Questions on Force

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1.Does all forces act on an object cause acceleration? Solution : No, if you act force on a building it do not move. 2.Explain the difference between contact and non contact force by giving examples? Contact forces: that involves physical contact.Example kicking a ball Field (non contact forces ): do not involve physical contact. Example all fundamental forces 3.what are the known fundamental forces in nature?
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Radar Technology

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Radar is an abravation word: Ra stands for radio D for detection A for and R for ranging Radar designed to detect and track the presence of aircraft, missieles and other electronic technology. This system is similar with traffic control ground vehicles. The distance is calculated as given below Speed = Distance /Time
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This mineral may be important

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Physics for all

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Physics explain the universe with its prporty
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How can I get online business.

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Social media is the most powerful in our world,but Most of African people Uses for other purposes. Africans we always affected by politics and backwardness.We do not know how social media is used for earning money online.As part of the world community every thing reaches after American, Asian, European and Australian.I do not understand why always late in technology, in my opinion leaders play a vital role in such development.African leaders,they live for their own purpose.
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