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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 ...
SP
Answered by Saabir P. • Physics tutor
2351 Views

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
8372 Views

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
4920 Views

Choose two of the following Latin words or verbs and give an English derivative for each word or verb : a) caelum b) sequor, sequi, sectutus sum c)senex d)verto, vertere, versi, versus

any 2 for 1 mark each:a) Caelum - Latin definition : sky - English derivative: celestial, climateb) sequor, sequi, secutus sum - Latin definition: follow - English derivative: sequence, consecutive, conseque...
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Answered by Goya V. • Latin tutor
3195 Views

For a murder conviction, it must be proved that the defendant intended to cause serious injury or death. The jury is directed to consider the 'normal meaning' of intent. What do you think that means and do you think it is a suitable direction for a jury?

Normally, there would be more context for a question like this; for instance, you may have been given a murder case to read beforehand which would likely provoke some questions about the meaning of intention...
SL
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