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Describe the perfect ionic model

In this model ions are considered perfect spheres and therfore point charges. In this model ions have only electrostatic attraction with no covalent interactions.

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5658 Views

Define a geostationary orbit

A geostationary orbit is one that appears in the same location as seen from an observer on earth. This requires three criteria; It's orbital period must be 24 hours The orbit must be above the equator at...

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Answered by Jonathan S. Physics tutor
2385 Views

Not all mutations lead to changed in amino acid sequence of polypeptides. Explain why.

Amino acids are the building bricks of life. Redundency occured with in their coding however. A single Amino acid may be coded for by more than one codon (a sequence of three nucleic acids) and therfore m...

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Answered by Jonathan S. Biology tutor
2240 Views

If a rectangle has length (x-4), width (x-5) and area 12 then what is the value of x?

length x width = area (as rectangle)(x-4)(x-5)=12x2-9x+20=12x2

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Answered by Simon M. Maths tutor
3200 Views

How should I write a grade 7 essay?

The most stressful parts of the IB exams (especially HL) are Papers 2 and (if HL) 3. Seeing as how you will only have about 30-40 minutes to write each essay, your 5 minutes of preparation time at the beg...

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Answered by Matilde M. History tutor
4327 Views

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