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What is the difference between reliability and validity?

These two concepts can be confusing at first, but once you get used to using them they get a lot easier. A golden rule for using these ideas in exam questions is to never use them together or just ...

Answered by Elinor G. Psychology tutor
1237 Views

How do we decide whether to use the perfect or imperfect in the past tense in French?

This is one of the trickier aspects of French grammar. The first thing we must do is to decide whether we definitely need to use the past tense in French. The trickiest aspect is then knowing whether to u...

Answered by George C. French tutor
1327 Views

To what extent was US's use of atomic weapons on Japan in the Second World War justified?

Considering the profound impact of the United States use of the atomic weapon on modern history, the historical debate on whether or not the US is justified in employing it near the end of the second worl...

Answered by Jonathan C. History tutor
1051 Views

What is meant by 'resolving a vector into its components'?

So, let's think of a vector as an 'instruction' - a guide telling us to move in a specific direction for a certain distance. (Draw arbitrary vector A here). This is not the only way to move this distance ...

Answered by John R. Physics tutor
2216 Views

Explain the effect of inhibitors on the activity of enzymes.

Enzyme inhibitors are substances that alter the catalytic action of an enzyme. There are two types of inhibitors: competitive and non-competitive. Competitive inhibitors bind at the active site of an enzy...

Answered by Vasiliki V. Biology tutor
3915 Views

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