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What is a moment?

A moment about a point is the product of a force applied and the distance perpendicular to the line of action of that force. So M = F*d

KT
Answered by Kieran T. Physics tutor
2343 Views

How and when should I include a historians' opinion?

You should include a historians' opinion to support or contrast the argument you have made. For example, say you were arguing for a certain time period that agrarian issues led to public discontent, and t...

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Answered by Caitlin C. History tutor
2303 Views

Given that y = sin(2x)(4x+1)^3, find dy/dx

The product rule states that (uv)' = u'v + uv' Therefore we know that to find dy/dx we must have (sin(2x))'(4x+1)^3 +sin(2x)((4x+1)^3)' We can differentiate sin(2x) to 2cos(2x) and using the chain rule we...

MM
Answered by Myles M. Maths tutor
3944 Views

The diagram below represents a balloon just before take-off. The balloon’s basket is attached to the ground by two fixing ropes.Calculate the tension in either of the fixing ropes.

The first and most important step is to highlight all the important information that is given in the question. Sometimes, it is very easy to miss out key numbers that you might require to get to the final...

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Answered by Nele W. Physics tutor
10426 Views

When do we use the quadratic formula, and when the completing the square method?

First, you have to understand that both are essentially the same; the formula is based on the completing the square method. ax^2+b^x+c=0 can with appropriate steps be transformed to x = (-b +- root(b^2-4a...

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Answered by Ioannis P. Maths tutor
3464 Views

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