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The water loses 4200 J/kg °C * 0.5 kg = 2100 J/°C

As it's lost 46,200 J in total (regardless of the time it took for this to happen), it must have reduced in temperature by 46,200 J   /   2100 J/°C...

Subtract 2) from 1), we get x = 3. This means that y must be 2.

Alpha particles which are made up of 2 protons and 2 neutrons (overall positive charge) are fired towards a thin sheet of gold. To ensure any deflection of the alpha particles is only due to the gold shee...

Economic growth refers to an increase in real GDP (or output) and can be achieved in a number of ways not only including an improvement in technology but also attempts at improving the human capital of an...

Respiration is the process which cells use to produce energy and happens in the mitochondria of the cells. Almost every cell carries out respiration. There are 4 main stages to respiration - glycolysis, t...