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What causes the heart to contract?

This type of question requires careful explanation and therefore would need to be broken down into chunks. One of the reasons for this is that it may be completely new concepts for students. My answer to a s...
SR
Answered by Saajan R. • Biology tutor
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Integrate the following with respect to x, f(x)=xsin(x)

f(x)= x sin(x) >>>>>>>>>>>>>>>>>> integral[ u dv/dx ] dx= uv - integral[v* du/dx] dx let x=u and sin(x)=dv/dx >>>>>>>>>>&gt...
JC
Answered by Jamie C. • Maths tutor
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Explain the difference between a loose Constructionist and a strict Constructionist on the US Supreme Court (10 marks).

Presidents often look for justices who share their judicial philosophy. Justices are therefore classified as to whether they are liberals (loose constructionists) or conservatives (strict constructionists): ...
SB
8692 Views

Giving examples, explain how superpowers can exert their influence (16)

Intro: define superpower (a very powerful and influential nation as a result of culture, geography, military, economic base and population. currently America, historically Russia/Empires/UK, rise of China an...
Answered by • Geography tutor
6091 Views

The Σ0 baryon, composed of the quark combination uds, is produced through the strong interaction between a π+ meson and a neutron. π+ + n →Σ0 + X What is the quark composition of X?

Multiple choice answers:A: u s-barB: u dC: u d-barD: u d s-barThis question requires you to have memorised:the quark content of a neutron and all the pions,that strangeness number and baryon number are conse...
Answered by • Physics tutor
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