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What are the similarities and differences between Irregular and Regular Echinoids?

Both species are part of the same phyla, Echinodermata. They both live in marine environments, have the same feeding system, hasve ambulacra and tube feet, which they use for respiration. However, there are ...
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Answered by Emily H. • Geology tutor
4889 Views

How does the form/structure and language of a text or extract shape meaning?

This is a question my A Level English teacher would always ask, how do words shape meaning? Although seemingly a very broad question, we must always look at how the words/ language fit in the extract, form t...
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what does a value shared in the ratio 2:3 mean?

this means that there are 5 parts to share out altogether. (2+3=5) So you take the value you wish to share and divide it by 5. once you've divided the value by five, to share in the ratio 2:3 simply means to...
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Answered by Ewan-James T. • Maths tutor
72548 Views

how do i convert from a sine angle to a cosine angle?

the phase difference between sine and cosine graphs is pi/2. so when the sine function is applied to an angle, to get the corresponding answer but from a cosine function you simply add pi/2 (Radians only, fo...
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A force is applied to a box of mass 2kg so that is accelerates at 2ms^-2. Find the force acting on the box and thus calculate the work done in moving the box 10m in the direction of the force.

Force=(mass)x(acceleration) F=2x2=4N Work done=(Force)x(distance) W=4x10=40J
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