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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
3241 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
5874 Views

Was Eddie responsible for the tragedy that unfolds in 'A View from the Bridge'?

Set up an essay plan (important to review how to structure an essay and the PEEL format). It can be helpful to create two mind maps at first, one for ideas as to how he is not responsible and another for how...
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Answered by Sophie C. • English tutor
2236 Views

Give 3 differences between DNA and RNA

RNA is single stranded whereas DNA is double stranded RNA has uracil whereas DNA has thymine RNA contain the pentose sugar ribose whereas DNA has deoxyribose
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Answered by Oliver H. • Biology tutor
5870 Views

What is the behavioural treatment for phobias?

The behavioural treatment for phobias consists of two forms of therapy, which both aim to break the link between the phobia and the feared resonse. The first type is flooding; this is a quick and intense ses...
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