Sikhne ke liye mehnat krna hi hoga

Pan Masala chabana swasthya ke liye hanikarak hai. This statutory warning is compulsory to be mentioned on the labels of the product. Identify and discuss the environment, which is associated with this example

#StudentTalk - Animesh, Bihar!! Aap logon ke itne pyar ke liye shukriya :)

#WinnersTalk - Jaaniye kaise haal hi mein Doubtnut par aye vipin ne quiz jeet kar khareedi apne liye books! :D

Dekhte he pta karein ki number 4 se divide hoga ke nhi

Dekhte he pta karein ki number 3 se divide hoga ke nhi

A running man has half the KE that a body of half his mass has. The man speeds up by 1.0ms^(-1) and then has the same energy as the boy. What were the original speeds of the man and the boy?

A child stands at the centre of a turn table with his two arms outstretched. The turn table is set rotating with an angular speed of 40 rpm. How much is the angular speed of the child, if he folds his hands back reducing the moment of inertia to (2//5) time the initial value ? Assume that the turn table rotates without friction. (b) Show that the child's new K.E. of rotation is more than the initial K.E. of rotation. How do you account for this increase in K.E. ?

A boy weighing 50 kg finished long jump at a distance of 8 m . Considering that he moved along a parabolic path and his angle of jumps was 45^(@) , his initial KE will be g = 9.8 m//s^(2)