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A child is going down a snowy hill on a sledge. Draw a free-body force diagram for the child and sledge.

First, we model the child as a single point particle. Then, we add in arrows representing vectors for the relevant forces: friction, weight and the contact force. We can also assume that the child has reache...
TB
Answered by Tessa B. • Physics tutor
5621 Views

Differentiate y= 2^x

Initially this looks unlike all the other differentiation questions and seems unsolvable. However the expression 2^x can be rewritten in an equivalent form that will allow us to use the differentiation rules...
MG
Answered by Max G. • Maths tutor
8936 Views

How exactly does integration by parts work?

Integration by parts can be considered as the inverse method of differentiation using the product rule. With the product rule we have: d(f g)/dx = f (dg/dx) + g*(df/dx) where f and g are functions of x. Now ...
FI
Answered by Fahad I. • Maths tutor
3890 Views

Critically analyse the offence of assault occasioning actual bodily harm under s 47 of the Offences Against the Person Act 1861.

The offence of assault occasioning actual bodily harm is unsatisfactory because it is an offence of constructive liability whose mens rea need not correspond to the actus reus. To be convicted of assault occ...
JW
Answered by Joe W. • Law tutor
9551 Views

How can I best prepare for my Spanish A level oral exam?

As someone who scored full marks on my A level Spanish oral exam, I am in a good position to help. The main thing examiners are looking for is confidence in what you know, and an ability to improvise. Of cou...
RF
Answered by Roman F. • Spanish tutor
5996 Views