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Explain how pressure differences in the heart ensure sufficient pumping of blood into the arteries. (3)

increased pressure in the ventricles the pressure in the ventricles is higher than the pressure in the atria causing the atrioventricular valves to closecausing the semilunar valves to open and the blood ...

Answered by Kelly W. Biology tutor
3209 Views

Tu portes un uniforme scolaire? Que penses-tu de ça? Tu es pour ou contre l'uniforme?

Oui, je porte un uniforme scolaire. On a deux types: un uniforme pour les jours où on a sport, et un uniforme pour les autres jours. J'aimerai porter mes propres habits, de pouvoir choisir ce que je vais ...

Answered by Yasmine S. French tutor
3341 Views

Given f(x)=2x^3 - 2x^2 + 8x, find f'(x) and f"(x).

The first step in scoring full marks on this typically 4 mark question is to recognise what it's asking you to do. We use the process of differentiation to solve it. f(x)=2x^3 - 2x^2 + 8xf'(x) = 6x^2 - 4x...

Answered by Maths tutor
3199 Views

Integrate (x-5)/(x+1)(x-2) using partial fractions

We need to split the initial fraction into two. We know that (x-5)/(x+1)(x-2) is equivalent to A/(x+1) + B/(x-2). Multiplying by (x+1)(x-2) we get x-5 = A(x-2) + B(x+1). Expanding the brackets gives x - 5...

Answered by Joshua A. Maths tutor
6108 Views

How does Patrick Süskind use religion to criticise society in 'Perfume: The Story of a Murderer'

Patrick Süskind frequently uses religious references in order to disparage society and the value it places on outmoded conventions. One way he does this is by highlighting the importance placed on virgini...

Answered by English Literature tutor
5697 Views

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