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What main features are there in animal and plant cells? What functions do these elements serve?

Features/organelles present in both animal and plant cells include: the nucleus (where the DNA/genetic information is stored - this controls the activities of the cell), the cell membrane (a thin containing ...
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Answered by Phoebe W. • Biology tutor
10620 Views

What is the difference between a Recitative and an Aria in Baroque Opera?

Recitatives and Arias serve two contrasting functions in the Baroque Opera. A recitative, also known by the Italian name 'recitativo', acts as a dialogue and allows the characters to move the story onwards t...
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Answered by Issie O. • Music tutor
54974 Views

Make F the subject of the formula: C= 5(F-32) / 9

The first step to making F the subject of this formula is multiplying both sides by 9 to get rid of the denominator on the right hand side. Therefore, 9C= 5(F-32) 2. Secondly, we have to divide both sides by...
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Answered by Sofia H. • Maths tutor
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A cylindrical specimen of material with diameter 1.5x10^-4 has a breaking stress of 1.3GPa. Calculate the tensile force acting on the specimen at breaking point.

We first need to remember that stress is force over area. We can calculate the area using the diameter as the specimen is told to be cylindrical (circular cross-section). The area can be calculated using 0.2...
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Answered by Richard M. • Physics tutor
11676 Views

A 1000kg car accelerates from 0 to 20 m/s in 15 seconds. Calculate the acceleration of the car, the force required for this acceleration and the momentum of the car at 20 m/s.

The first part of the question, calculating the acceleration, uses the fact that acceleration equals the change in velocity divided by the time. In this case, the change in velocity is 20-0 and the time is 1...
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Answered by Richard M. • Physics tutor
5324 Views