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To every action, there is always an equal and opposite reaction.Force always occurs in pairs. Consider two bodies A and B, force on a body A by B is equal and opposite to the force on the body B by A.i.e,...

Ionisation energy increases overall because nuclear charge increases with no significant increase in shielding, so it becomes more difficult to remove the outer electron.Ionisation energy decreases going ...

There is a v simple formula for answering these 'explain' questionsStart with definitions - what is monopolistic competition? -10% of marksThen to score full marks, you must include:2 we...

To start with, we want to put this into quadratic form, where we have ax^2+bx+c=0. We notice that there are terms on both sides of the equation. So we can expand the right hand side and then bring all th...

a) Determine the upward force produced by the droneWe can simplify the problem by drawing a free body diagram. This allows us to analyse the forces involved. We are told the drone is stationary, meaning t...