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Step 1: firstly take a breath. Take ten seconds before opening the exam paper to take a deep breath and calm and focus your mind before tackling the question. Step 2: Choose a question that you feel comfo...

Oxygen diffuses from the air where it is present at a higher concentration and pressure, to the lungs where it is at a lower concentration and pressure - we say it moves 'down' these gradients; high to lo...

A government is a group of people who have authority to govern a country or state and have the power to make decisions that involves the society and the economy. They play a key role in major decisions th...

Differentiate the equationdy/dx=6x+2x(dy/dx)+2y-4y(dy/dx)Set this equal to zero and solve for dy/dx which gives:dy/dx=(2y+6x)/(4y-2x)For x=2 and y=4 dy/dx=5/3(y-y_o)=m(x-x_o)y-4=(5/3)(...

Think about talking to someone about what you want to study at university: what would you say? What have you read, watched, seen or done that has inspired you? This could be anything: something you did at...