The metal block had a mass of 1.50kg

The amount of heat energy lost by the metal is

E = 200 J/kg*C x 1.5kg x (100–20)  = 24000 J

That is transferred to the liquid, raising it's temperature

24000 J = 1,000 kg/J*C x 3kg x ∆T

∆T = 8

Since the liquid started at 0ºC, the final temp is 8ºC

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation: