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What is the equation for respiration?

C6H12O6 + 6O2 -----6CO 2 + 6H 2 O
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Answered by Lily W. Biology tutor
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Solve x^2 + 5x – 24 = 0

Being a quadratic equation in the following form,the simplest way to solve would be through the quadratic formula which goes as follows: The first step to solving is therefore to identify a, b, c, within our...
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Answered by Mohammed K. Maths tutor
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What is the period and frequency of a wave? - GCSE or A-Level students may ask this

A wave could be transverse or longitudinal. We like to think in terms of whole waves. This is when a particle comes back to it's original position and direction of movement. For transverse waves, we can see ...
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Answered by Saabir P. Physics tutor
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Why is light refracted when it crosses from air to glass?

To answer this question we need to know what makes glass different to air. The main difference is their refractive index. For air it's 1 and for glass it's anywhere between 1.52 - 1.54 depending on the type ...
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Answered by Stefania R. Physics tutor
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If f(x)=7xe^x, find f'(x)

f(x) = 7xe x Using the product rule: [f'(x)=u*(dv/dx)+ v*(du/dx)]Let u=7x and v=e x Therefore, du/dx=7 and dv/dx=e x Hence, f'(x) = 7xe x + 7e x
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Answered by Lanya M. Maths tutor
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