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tony lee

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  1. but two wheels are moving at the same direction , why will have different direction of friction ??
  2. hello , i am learning about forces . there is a digraph in the text book showing the friction on the wheels of a bicycle . i want to ask why the back wheel with the petas and the front wheel has a diffeernt direction of friction ?? thank you
  3. hi, THANK YOU VERY MUCH for answering my questions. Your answer is simple and direct , and make me have a clear concept on latent heat and what it is .you explain it really clear .and thanks again excuse me . i have a follow-up question , what is internal energy and what s the differences between potential energy, kinetic energy and internal energy . thank you hello , once i saw your explanation i feel warm that u have spent so many times not only explaining my question,but also tell me more information. thank you and i understand your explanation well . thank you for helping me and spending your time on my questions . thanks
  4. yes i hv done the graph . i dont understand when changing stage , the temperature remind unchange but it release latent heat ?? what kind of energy does latent heat refers to ? thanks for anwsering my questions studiot . yes i hv done the graph . i dont understand when changing stage , the temperature remind unchange but it release latent heat ?? what kind of energy does latent heat refers to ? thanks for anwsering my questions studiot .
  5. hello i m a secondary 3 student. i m studying and heating and cooling those kind of things. I want to ask what is latent heat , and is it related to potiential engery ?? and how ?? thank you
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