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What is dot product and how to calculate it?

There are two ways of multiplying vectors: one gives you another vector (cross product) and the other gives you a scalar- a number, like 3, 18 or 196 352. Hence, dot product is also called the scalar product...
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Answered by Filip W. • Maths tutor
9218 Views

If one proton is travelling through space at 0.3c, what is it's kinetic energy in MeV?

We know the formula for kinetic energy is KE = (1/2)mv 2 . If we know that c, the speed of light, is 3x10 8 ms -1 (you will be given this value in your Data & Formula books in the exam) and the proton is...
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Answered by Oisin B. • Physics tutor
7501 Views

Prove that the d(tan(x))/dx is equal to sec^2(x).

You can express tan(x) as sin(x)/cos(x). Therefore, tan(x)= sin(x)/ cos(x)The quotient rule can be applied here as there is a function of x in the numerator and denominator.Quotient Rule: (v*(du/dx) - u*(dv/...
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Answered by Chinazam U. • Maths tutor
19959 Views

Describe the processes involved in protein production within a cell

First, DNA-helicase (an enzyme) separates the two strands of DNA to allow RNA polymerase (another enzyme) to produce messenger RNA (mRNA) from free nucleotides, coded for by a gene in the DNA. The mRNA then ...
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Answered by Oisin B. • Biology tutor
3202 Views

What is the general rule for differentiation?

In differentiation you multiply the coefficient of the subject (what the value is multiplied by e.g. 3 is the coefficient of 3x 6 ) by its exponent (the power that the value is raised to e.g. the exponent of...
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Answered by Oisin B. • Maths tutor
4874 Views