Saurabh

A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ; 1.average velocity 2.average speed

plzzzzzz if u know try my question plzzzzzzz.............

Yes I am right there with you. I got 0.33 which is 33%. I think the answer in the textbook is wrong, check with your professor because that is what I am going to do.

Mole fraction of solute = 0.2 Mole fraction of Benzene = 1- 0.2 = 0.8 W.k.t Mole = Given mass/ molar mass I.e 0.8 = Given mass / 78 → Given mass = 78× 0.8 = 62.4 Now 0.2 × 1000 / 62.4 = 3.2

10 years later, Amreen will be x+5+10 And Juhi will be 3x+5+10 Not x+10 and 3x+10

3x+5+10=2(x+5+10) 3x+15=2x+30 X=15 So,at present Juhi=3x+5 =3*15+5 =50 years And Amreen=x+5 =15+5 =20years

write down the greatest and the least numbers which when rounded off to the nearest hundred becomes 300