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A cylinder has a radius of 4 cm and volume of 800 cm3. A similar cylinder with the same height has a volume of 200 cm3. Find the radius of the smaller cylinder.

Firstly, we have to understand how the radius of the first cylinder was used to calculate its volume. Then we can use that understanding to then use the information we have about the other cylinder to calcul...
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Answered by Mika Erik M. • Maths tutor
3349 Views

How exactly do 'carcinogens' actually cause cancer after damaging cells?

Carcinogen is a catch-all term for substances that lead to increased formation of cancers. There are actually several ways a carcinogenic substance can lead to cancer. One way is by attacking the DNA itself....
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Answered by Nicholas W. • Biology tutor
2878 Views

Why are antibodies made in Mice, are there disadvantages or advantages to this?

The first scientists to explore the use of antibodies for medicine used mice, and sometimes other animals, to produce antibodies, particularly because that was one of the first methods available using the te...
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Answered by Nicholas W. • Biology tutor
2941 Views

Male B has a mass of 72kg, and a height of 1.81m. Calculate the BMI of Male B to 3.s.f. (3)

I would describe the formula first:BMI = weight in kg/height in m^2 Now look at the number of marks offered = 3. Means you need to show your working, calculate the BMI accurately, and IMPORTANTLY, include th...
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Answered by Benoit J. • Biology tutor
6380 Views

Describe why NaCl has a high melting point

NaCl is an ionically bonded substance, with a giant ionic lattice structureThe Na+ and Cl- ions are bonded by strong ionic bonds within the lattice, and due to the high strength of these bonds, lots of energ...
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Answered by Krishan B. • Chemistry tutor
2535 Views