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Firstly we must remind ourselves of what is meant by critical angle. The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense ...
The redshift is an important piece of evidence for the big bang theory. If we look at the visible region on the electromagnetic wave spectrum, we will see there is red light on the left and there is viole...
The plum pudding model was the idea of a positively charged sphere, with negative electrons dotted within it as the model of an atom. easiest understood drawn outA scientist named Rutherford did ...
Live wires are dangerous because they carry current to the appliance they're connected to, at very high voltages. This means the wire has a high potenti...
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...
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