Pretender

When a man in a cage whose weight is 1000N pulls a rope that is attached on a cage around a fixed pulley,the force he exerts on the floor of the cage is 450N ,if the cage weigh 250N ,find the acceleration

A plastic ball fallen 2m onto a hard floor and bounces to a height of 1.8m. Find:- {1}coefficient of restitution of the collision {2}the height of the next ball bounce

I think our fellow use to simplify the arithmetics coz 40/5=8 so nothing was changed.then lets solve it correctly 8-2x =1 1/5 to get 6/5 u take denominator times the whole number plus the numerator(5*1)+1 the answer will be written over the as the new num...

Picture it like this:the rope is attached on top of the cage then from there it passes around a fixed pulley so the man in the cage is pulling the rope down from the pulley.PLEASE HELP ME Bobpursley

Same speed

Quantitatively molarity=moles/dm^3 but 1dm^3=1000ml thus 1mol=>1000ml ?mol=>2ml by crossmultiplication we got 0.002mol

Conc=n/v c=0.1mol/1L C=0.1mol/l concentration with respect to ion=stoichiometric value*conc of solution Na2SO4--->2Na^+1 + SO4^-2 hence conc of Na^+1=2*0.1mol/l =0.2mol/litre