Top answers

Why does ionisation energy increase across Period 3?

Ionisation energy is the energy required to remove the valence electron of an element/atom. The reason this increases is because, as we go across the period, the atomic number of the element increases. This ...
SF
Answered by Shahana F. • Chemistry tutor
3642 Views

Solve the second order ODE, giving a general solution: x'' + 2x' - 3x = 2e^-t

First find an auxiliary equation, for the complimentary function:m^2 + 2m - 3 = 0, (m+3)(m-1)=0m=1 or m=-3So the complimentary function is: x= Ae^t + Be^-3tFor the particular integral (PI), let x = Ue^-tthen...
IF
2681 Views

What is the indefinite integral of ln(x) ?

We can use integration by parts to solve this question. If we look at the formula for Integration by parts: ∫u(dv/dx)dx = uv - ∫ v (du/dx) dx , we see that u must be multiplied by something else so therefore...
DM
Answered by Dawud M. • Maths tutor
5348 Views

Outline Bowlby's Evolutionary Theory of Attachment

Bowlby (1958) defines attachment as a species-specific system that has evolutionary advantages and contributes to reproductive fitness. This is initially a biological relationship which then becomes a cognit...
KE
Answered by Katie E. • Psychology tutor
3730 Views

Madame Bovary is a French literature masterpiece. Analyze the character of Emma in a few words using key expressions that we have worked on last week.

Madame Bovary est une femme de classe moyenne qui a des difficultés à assumer sa vie d'épouse et de mère. Tout au long du roman, elle remet en question sa place au sein de la société et sa position de femme....
LB
Answered by Lyla B. • French tutor
1366 Views