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  1. Introduction to mechanical advantage (video) | Khan Academy

    Explore the concept of mechanical advantage with simple machines like levers. Understand how input force can be multiplied to output a greater force, albeit over a shorter distance, using the law of …

  2. pH, pOH, and the pH scale (article) | Khan Academy

    In combination with Eq. 1a/b and Eq. 2a/b, we can always relate pOH and/or pH to [OH] and [H +] . For a derivation of this equation, check out the article on the autoionization of water.

  3. Simple machines (video) | Embedded videos | Khan Academy

    And remember, we want to say our effort force equals our load force divided by our mechanical advantage. Okay, so let's say that our effort force is 500 newtons, how much can we lift with this …

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    Unexpected Application Error! Loading CSS chunk 162 failed.\n (https://cdn.kastatic.org/assessments/162.ef46db3751d8e999.css) Error: Loading CSS chunk 162 …

  7. Physics archive | Science | Khan Academy

    Unit 4: Waves Introduction to mechanical waves Sound The Doppler effect Wave interference

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  9. Calculate opportunity costs and comparative advantage using an input ...

    This method focuses on the input (labor hours) required rather than the output, providing a different perspective on efficiency and comparative advantage. It emphasizes the cost side of production, …

  10. «Քան» ակադեմիա | «Քան» ակադեմիա - Khan Academy

    Վաա՜յ։ Ինչ-որ բան այն չէ։ Խնդրում ենք փորձել կրկին։ Կարծես սխալմունք կա։ Հարկավոր է թարմացնել ։ Եթե խնդիրը դեռ առկա է, տեղեկացրու մեզ ։