Range of weak nuclear force is
pH of 0.1 M weak acid solution is 4. What is the dissociation constant of the acid ?
A perfectly elastic ball falls freely from a height h = 2.5 m onto an inclined plane of inclination α=37∘. Find the range S of the ball on the inclined plane. (See figure) (Take g=10ms−2)
Convert 18 kmhr in ms.