a stone block has length of 90cm and breadth of 25cm . if its mass is 250kg. find the pressure given by it on the ground.

Here,

Length(l) = 90 cm

converting onto metre, 90/100= 0.9m

breadth(b)=25 cm

converting into metre,

25/100= 0.25m

mass(M)= 250 kg

acceleration due to gravity (g)= 10 m/s2

Pressure(P)= ?

We know,

P=F/A

or,P=M*G/L*B

or, P= 250*10/0.25*0.9

or.P=2500/0.225

or,P=11111.11111

Therefore, the the stone block applies a pressure of 11111.11111 pascal

Explanation:

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

then go eat. lol.brainliest