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What is the "chain rule"?

The "chain rule" is a handy little tool that we can use to find the derivative of a complicated function. Specifically, we use the chain rule when we have functions within functions. But what does ...
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Answered by Joe F. • Maths tutor
4324 Views

2+2 is 4, minus 1, that's what?

Quick maths.
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Answered by Joe F. • Maths tutor
4920 Views

How does fractional distillation work?

Fractional distillation works by using the fact that molecules of different sizes have different boiling points. Generally, the smaller a molecule, the lower its boiling point. When heating up a mixture of m...
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Answered by David S. • Chemistry tutor
34018 Views

What is the total energy of a spaceship of mass m, orbiting a planet of mass M in a circular orbit with radius r? The ship and the planet are taken to be an isolated system.

In the non-inertial frame of reference of the spaceship, a centrifugal and a gravitational force acts on the spaceship. If its mass is m and the positive direction is radially outwards, we have: F G = -GmM/r...
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Answered by Ivan D. • Physics tutor
3304 Views

What is the difference between civil and criminal law?

The main difference between them is: the criminal law deals with wrongs committed against the state, whereas civil law deals with disputes between private individuals (or companies etc). This affects the aim...
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Answered by Nathan D. • Law tutor
5970 Views