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The equation f(x) =x^3 + 3x is drawn on a graph between x = 0 and x = 2. The graph is then rotated around the x axis by 2π to form a solid. What is the volume of this solid?

f(x) = x³+ 3x V = π ∫(f(x)²) dx V = π ∫₀²(x³+ 3x)(x³+ 3x) dx V = π ∫₀²(x⁶ + 6x⁴

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Briefly discuss one factor affecting performance in Eye-Witness testimony (6 marks)

One affect on our performance in eye witness testimony is levels of anxiety and stress. The Yerkes-Dodson law states that there is a relationship between levels of anxiety/stress and the efficiency of our...

Answered by Tom B. • Psychology tutor

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Explain the parliamentary process in both the house of commons and house of lords in the making of an act of parliament

The parliamentary process begins with one of the houses proposing a change in the current legislation, or a proposal to bring in new legislation. A bill can start in the House of Commons or House of Lords...

Answered by Tom B. • Law tutor

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Jason and Mary leave their houses at the same time. They travel towards each other, Mary at 20km/h and Jason at 15km/h. They pass each other after an hour and a half. What was the original distance between them when they started?

Mary = 20km/h Jason = 15km/h s = d/t After 1.5 hours, Mary = 30km and Jason = 22.5km 30 + 22.5 = 52.5km

Answered by Zac C. • Maths tutor

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What is a caesura in poetry and what effect can it have?

A caesura is a pause in the middle of a line of poetry. It usually comes in the form of punctuation, and the most common ones are full stops and commas. A full stop creates a harsher contrast between the ...

Answered by Nicole D. • English Literature tutor

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