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What is the difference between reliability and validity?

Reliability refers to how consistent the results of a study are or the consistent results of a measuring test.

This can be split into internal and external reliability. Internal reliability refers ...

NH
91186 Views

A spacecraft needs to be slowed down from a speed of 96m/s to 8.2m/s. This can be done by firing an object as the spacecraft is moving. If the mass of the spacecraft is 6730kg and the object is 50kg, calculate the velocity of the ejected object.

As we have there is object being fired out of the front of the spaceship we know the ship will have a lower velocity than before using the conversation of momentum. "The total momentum of a system is...

BQ
Answered by Ben Q. Physics tutor
1917 Views

What are the major themes of Frankenstein?

There are a lot of themes in Frankenstein, and I think which ones are major and which aren't is something we'll be debating. In terms of identifying them, though, we can list them or draw them up...

DB
5009 Views

What are the key roles of the House of Lords?

The House of Lords has 5 main roles: legislative, scrutiny, legitimating, deliberation and recriutment. However the first two are the most important. 

The legislative role is carried out through in...

CM
2610 Views

How should a poem be analysed?

The formulaic method I recommend is SPECS and SLIMS

Subject:  What is the event or experience the poem decribes/records?

Purpose

CM
3683 Views

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