Hot water at 100⁰C is added to 300gm of water at O⁰C until their final temperature of the mixture is 40⁰C .Calculate the mass of the hot water added.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

this could be newton#'s law of cooling. the cooling curve is exponential

i think it would be 5

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: