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A quadratic equation is one that includes x 2 as the highest power of x. Factorising is achieved in 3 steps. Let’s consider the example x 2 -3x-3=1 1) Put the equation into the form ax 2 +bx+c=0 x 2 -3x-4=02...

On the night of the 20/21st June 1791, King Louis XVI attempted to flee in an event that was later named the flight to Varennes . His plans were shrouded in secrecy, but he probably intended to flee to Montm...

Protectionism is a government philosophy towards foreign trade. According to this philosophy, governments should use tariffs and quotas to protect domestic firms from foreign competition. Protectionist trade...

A barrier to entry is an obstacle that prevents a new entrant from joining a market. They exist within both oligopolistic and monopolistic market structures. Barriers to entry matter because in the short run...

Overall, the general trend is an increase across the period. The decrease in shielding (as outer electrons are less influenced by the nucleus) is outweighed by an increased nuclear charge and a decreased ato...