Ek Sawaal Se Teen Concept Samjhein !

Ek jese words mein confuse toh nhi ho jaate

Represent graphically the variation of kinetic energy (E_k), potential energy (E_k) and total energy (E ) of a body falling freely from a height h. At what height is E_p = E_k ?

Electron affinity of sulphur is 1) More than O and Se 2) More than O but less than Se 3) Less than O but more than Se 4) Equal to O and Se

Doubtnut ke saath seekhiye ek naya English Word..!!

The depth x to which a bullet penetrates a human body depends on (i) coeffeicint of elasticity, eta and (ii) KE (E_k) of the bullet, By the method of dimensions, show that x prop ((E_k)/(eta))^(1//3)

The percentage of Se in peroxides enzyme is 0.5% by mass (atomic mass of Se = 78.4 amu). Then , the minimum molecular mass of enzyme which contains not more than one Se atom is