অষ্টম শ্রেণির বিজ্ঞান অধ্যায়-২। শক্তি । পর্ব-৩ | Class 8 science chapter 2

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Thank you sir🎉🎉

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❤

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1:10

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স্যার,গতিশক্তি 60J বলতে কী বুঝায়?
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এই প্রশ্নগুলোর উত্তর কীভাবে লিখবো?

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