Two objects of masses `200g` and `500g` have velocities of `10i m//s` and `(3i + 5j) m//s` respectively. The velocity of their centre of mass is

Correct option is A) 25√2

A) \(\cfrac{mass \,of \,solute}{mass \,of \,solution}\) × 100 

A) Solution X has the same concentration as solution Y.

Correct option is B) Vertex

C) gravitational

Since the gravitational force between two objects is directly proportional to their masses, if the mass of one of the objects is doubled, the gravitational force between then will also...

Answer is (A) \(\frac{r_2}{r_1}\)  F =   \(\frac{mv^2}{r}\) If m and v are constants, then F ∝ \(\frac{1}{r}\) ∴ \(\frac{F_1}{F_2}\) = \(\Big(\frac{r_2}{r_1}\Big)\)

Correct Answer - 100

Correct Answer - D Centre of mass remains stationary.

i. The amount of water vapour in air is determined in terms of its absolute humidity. ii. If objects of equal masses are given equal heat, their final temperature will be different. This...