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Sound waves are longitudinal. Describe a longitudinal sound wave?

A wave where the oscillations are parallel to the direction of energy transfer causing areas of compression and rarefaction
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Answered by Marie B. • Physics tutor
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Name the sub-atomical particles in the nucleus and their relative charges?

protons (+1) neutrons (0)
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Answered by Marie B. • Chemistry tutor
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Describe is photosynthesis?

The chemical change which happens in the leaves of green plants. It is the first step towards making food - not just for plants but ultimately every animal on the planet. During photosynthesis: Light energy ...
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Answered by Marie B. • Biology tutor
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How would you structure a 6 mark essay question?

For a 6 marker, you should be developing 2 distinct points, totalling 4 marks, and then providing a well reasoned evaluation as a conclusion for the last 2 marks. For the two distinct points, it is important...
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Answered by Luke H. • Economics tutor
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The area of a rectangle is 8cm^2. It has a length of (3x+1)cm and a width of (2x+5)cm. Work out the value of x.

We know that the equation of the area of a rectangle is width times by length. Therefore: 8=(3x+1)(2x+5) If we multiply out the brackets we get: 8=(6x 2 +2x+15x+5), thus, 8=6x 2 +17x+5, and therefore, 0=6x 2...
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Answered by Oliver C. • Maths tutor
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