This is beta site. https://beta.mathcity.org/ 2026-06-07T22:16:57+00:00 https://beta.mathcity.org/ https://beta.mathcity.org/_media/logo.png text/html 2025-01-21T16:14:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://beta.mathcity.org/people/amir?rev=1737476042&do=diff Amir Shehzad We are very thankful to Mr. Amir Shehzad for his contribution to the website. <image shape=“rounded”>[Mr. Amir Shehzad]</image> * Email: <amirshehzad569@gmail.com> * Cell: +92-343-4443214 * YouTube Chanel: <https://www.youtube.com/channel/UCAci3yf20CcDotwdTJOD8WQ> Contribution: 9th (Science) (PTB) * Unit 04 (10th Science PTB) | VIEW text/html 2025-01-21T16:14:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://beta.mathcity.org/people/babar-ahmad?rev=1737476042&do=diff Dr Babar Ahmad <image shape=“rounded”>[Mr. Raheel Ahmad]</image> We are very thankful to him for his great contribution to our website. Dr. Ahmad is an Assistant Professor at COMSTAS University Islamabad. He is talented teacher and researcher, who wrote many book on Mechanics.