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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
5475 Views

How is thermoregulation achieved

When it is too cold the hypothalamus in the brain detects it is too cold it sends nerve impulses or electrical signals through the nervous system to targeted areas:erector muscles (don't laugh): are constric...
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Answered by Vikram M. Biology tutor
3190 Views

How does the reflex arc work?

first something must occur, a change in the external environment (and more rarely within the body). This is known as a stimulus.This stimulus will be picked up or "recepted" by a receptor.The recep...
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Answered by Vikram M. Biology tutor
4624 Views

How should I structure my paragraphs in an essay?

You can use PEAL to create in depth but to the point paragraphs. Write P.E.A.L at the top of your page as a checklist. P stands for point, so the first thing you must do it make a point about your text that ...
MJ
Answered by Melissa J. English tutor
3914 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...
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Answered by Max G. Maths tutor
8807 Views