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What is the magnitude and direction of the resultant force of 3N horizontal and 5N vertical?

Magnitude: Find the square root of 3^2+5^2=root of 34=5.83N (3sf) Direction: Draw a triangle with 3N at the bottom, 5N going up and the hypotenuse then represents the resultant force.The direction will be th...
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Answered by Rhiannon H. • Maths tutor
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What is the Biuret test? How do I interpret the results?

The Biuret test is a test for protein, which detects for the presence of protein bonds. In the test, Biuret reagent (sodium hydroxide, hydrated copper (II) suphate and sodium tartrate) is added to the liquid...
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Answered by Rebecca P. • Biology tutor
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Explain what occurs at a conservative plate boundary and provide an example.

A Conservative plate boundary is where two crustal plates slide past each other, and the movement of the plates is parallel to the plate margin. The plates move with relative horizontal movement which is eit...
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Answered by Rachel P. • Geography tutor
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Why is it that the sum of all natural numbers up to n is 1/2(n)(n+1)?

First let's consider the case of even numbers. Suppose n is even, then it must be double some other number, so we have: n = 2k Where k is another natural number. We want to find out what: 1 + 2 + ... + (n - ...
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Answered by Ibrahim M. • Maths tutor
4879 Views

what factors determine enzyme activity?

several factors play a role in the rate of an enzyme catalysed reaction. substrate concentration: The amount of substrate in the solution. The higher the concentration of substrate the more frequently they w...
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Answered by Jack L. • Biology tutor
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