Top answers

Can you explain what the flux of a light source is?

The word 'flux' can be used in many different contexts, but in general it refers to the amount of 'stuff' passing through a unit area of space per unit time. In the case of light sources, we can measure flux...
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Answered by Wilf S. • Physics tutor
5178 Views

Why contemporary art is so difficult to understand?

This question started from the concept of 'canvas'. After WW2, artists started to be sceptical about human rationality. And the canvas was the symbol of human's rationality in art area. So artists stop drawi...
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Answered by Kyungmi K. • Art tutor
8473 Views

Why are drug trials needed?

To determine the side effects of taking the drug on humans, to test for toxicity, to determine the correct dosage needed, and to test the effectiveness (efficacy) of the drug.
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Answered by Devna P. • Biology tutor
4011 Views

How is crude oil separated into fractions?

Crude oil is seperated using a method called fractional distillation. The hydrocarbons that make up crude oil have different boiling points, so when the crude oil is heated, each compound evaporates at a dif...
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Answered by Devna P. • Chemistry tutor
14228 Views

what is the difference between indefinite and definite particles?

The definite particle in arabic includes the letters 'alif' and 'laam' at the beginning of the word, so pronounced as 'al'. The purpose is to render the noun on which it is pre-fixed to. Consequantly, it is ...
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Answered by Zainab I. • Arabic tutor
9602 Views