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Fig. below shows two ice hockey players chasing after the puck. The player wearing 4 number shirt pushes the player wearing 2 number shirt with his stick. The size of the push is 400 N and it lasts for 0.4 s. How fast are the players moving after the push?
Updated Wed, 28 Aug 2019 02:02 pm
(i) Calculate the no. of \(e^-\) in 5 mole of \(NH_3\) ?
(ii) Calculate the no. of Protons in 0.5 mole of \(H_2SO_4\) ?
(iii) Calculate the no. of Neutrons in 1 mole of \(D_2O\) ?
(iv) Calculate the no. of atoms in 10 mole \(Na_2SO_4.10H_2O\) ?
Updated Wed, 28 Aug 2019 02:01 pm