Top answers

How do endothermic and exothermic reactions differ?

Endothermic reactions take in heat from the surroundings, whereas exothermic reactions release heat to the surroundings. Exothermic reactions release heat as the energy released from the bonds being made in ...
ML
3984 Views

Discuss the use of doubling in the plays of Shakespeare.

Emma Smith states that Doubling is not just a 'practical necessity, but a representational technique that could also make connections and contrasts between distinct characters or worlds'. She explains it is ...
TJ
Answered by Tesni J. • English tutor
6233 Views

Prove the identity: (sinx - tanx)(cosx - cotx) = (sinx - 1)(cosx - 1)

(sinx - tanx)(cosx - cotx)= (sinx - sinx/cosx)(cosx - cosx/sinx)= sinxcosx - (sinx + cosx) + 1= (sinx - 1)(cosx - 1)
CP
Answered by Charlie P. • Maths tutor
4796 Views

For what values of k does the line y=kx-1 have two distinct points of intersection with the circle (x-2)^2+(y-3)^2=2?

sub y=kx-1 into circle equation, get (k^2+1)x^2-(8k+4)x+18=0for 2 distinct solutions need b^2-4ac>0, ie -8k^2+64k-56>0iff k^2-8k+7<0complete the square: intersections of equation in k satisfy(k-4)^2...
CB
Answered by Christopher B. • Maths tutor
5816 Views

Discuss the depiction of the natural world in one of the poems written by Ted Hughes.

Ted Hughes' Thrushes delineates the natural world as a a brutal realm of savagery and survival. An analysis of Hughes' careful use of phonological patterning, selection of lexical items and symbolism illumin...
EM
Answered by Eamon M. • English tutor
3583 Views