A flask is closed by a stop valve. The valve allows only those air molecules that are moving faster than a certain speed to move out of the flask and allows only air molecules that are moving slower than that speed to enter the flask from outside. What effect would this filter have on the temperature of the air in the flask.

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*67th IMO 2026 is Officially Out! 🎓*

• 🥇 *China* has secured Rank 1 at the IMO (again)!
• 🥇 *India* achieved the 7th Position this time, earning 7 Golds and 4 Silver Medals.
• 🌏 *China* was the host of this IMO.

Private companies like SOF are running school contests under the exact same names as real international Olympiads, with no disclosure that they're unrelated. Started a petition asking for renaming or clear disclaimers so students and parents stop being misled — sign if you agree:
https://c.org/jJRXGfW6Vt

Takes ~1 minute.

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Achi site hai

At the 58th International Chemistry Olympiad (IChO) 2026, held in Tashkent, Uzbekistan, all four members of the Indian contingent secured gold medals, achieving a historic first-place ranking for India on the global stage. This unprecedented all-gold sweep represents India's most distinguished performance in its 27-year history of participation. India shared the top position with China, Vietnam, and an individual participant from Russia.

The four scholars who achieved this milestone represent diverse regions of India:
* Kabeer Chhillar (Delhi): A distinguished academic performer who also secured All India Rank (AIR) 2 in the JEE Advanced 2026 examinations immediately preceding the event.
* Debadatta Priyadarshi (Bhubaneswar, Odisha): Enhanced his previous international standing following his silver medal win at the 2025 Olympiad in Dubai.
* Sandeep Kuchi (Hyderabad, Telangana): Achieved consecutive global success, building upon his gold medal victory from the 2025 competition.
* Harshit Singhal (Mandi Gobindgarh, Punjab): Delivered a flawless performance to ensure a complete sweep for the nation.

Event Details
* Location: Tashkent, Uzbekistan
* Timeline: 10 July to 19 July 2026
* Global Competition: 363 total student participants representing 93 different countries.