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Outline the fight or flight response

The fight or flight response is the body and brains reaction to a situation, resulting in either to withstand the situation (fight) or flee the situation (flight). Firstly the hypothalamus,a region of the fo...
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Answered by Katie S. • Geography tutor
19435 Views

The curve C is paramterised by the equations: x = 5t + 3 ; y = 2 / t ; t > 0 Find y in terms of x and hence find dy/dx

x = 5t + 3 -> x - 3 = 5t -> (x - 3) / 5 = t y = 2 / t -> y = 2 / ((x - 3) / 5) -> y = 10 / (x - 3) dy/dx = d/dx (10 / (x - 3)) -> dy/dx= -10 (x - 3) -2
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Answered by Dylan C. • Maths tutor
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Answered by Ertug A. • Maths tutor
4724 Views

How do you divide polynomials? How do you do it with remainder?

I'll show you on a whiteboard or a piece of paper, there's a nice grid method you can use which is a lot easier (I think) than the weird long division way I got taught in school.
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Answered by Tutor115090 D. • Maths tutor
3726 Views

A buffer solution is made with a pH of 5.000. Solid sodium ethanoate, CH3COONa, is added to 400 cm^3 of 0.200 mol dm^–3 ethanoic acid (Ka = 1.75 × 10^–5 mol dm^–3). Calculate the mass of sodium acetate that must be dissolved in the acid to prepare this

There are three steps: Calculate [CH 3 COO – ] using the equation for K a Calculate the moles of CH 3 COO – using the equation concentration = moles/volumeCalculate the mass of CH 3 COONa using the equation ...
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Answered by Felix B. • Chemistry tutor
15665 Views