Normally when you drop a ball, it can't bounce higher than the height it started from due to the conservation of energy — but not this one. Okay, I'll drop it at the table height and it'll go higher than the table. So watch this. Cool. How is this even possible? With a normal ball and a best-case scenario, the highest that a ball can bounce to is exactly the point that it was dropped from. In that case, it would be perfectly elastic with no energy loss — but in real life, with real materials, there's always some energy loss as heat and sound and sometimes plastic deformation. Well, you might have already noticed that this ball looks a little odd. That's because it's actually a balloon with something else elastic inside of it. So what's inside here? With this hollowed-out half-sphere here, we can invert it. This provides a bunch of energy stored elastically in the bulge of the rubber. آدرس کانال تلگرام: https://t.me/LEWM_teachersafari آدرس کانال ایتا: https://eitaa.com/everythinginenglish راه ارتباط با ما: @Marzieh_Safari

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Hi everyone, sorry I didn't say goodnight last night; I've been really busy.

You'll never take me down. I'm invincible. No,you're not. I can see you. What? You heard me, you're not invincible. I can see you. All right, I think you have a fundamental misunderstanding of my... https://eitaa.com/langoage مارا به دوستان خود معرفی کنید🎀💞

دوستان سلام! امروز می‌خوایم با یک مدل‌ از سوالات نوشتاری آیلتس آشنا بشیم. یعنی Writing Task 1 ✍️ این بخش مربوط به توصیف و تحلیل نمودارها، گراف‌ها و جدول‌هاست. 📊📈 یاد می گیریم که چی بنویسیم. نکات مهم رو جدا کنیم، مقایسه‌ انجام بدیم و یک متن حرفه‌ای بنویسیم. آماده‌اید؟ بزن بریم! 🚀 https://eitaa.com/langoage مارا به دوستان خود معرفی کنید🎀💞

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