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Explain how hydrogen bonding occurs between molecules of water.

Hydrogen Bonding occurs between 2 adjacent molecules of H2O.

The polar covalent bond between oxygen and hydrogen creates negative and positive partial charges respectively.

There ...

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Answered by Tom H. Biology tutor
16944 Views

Steel has a density of 8030kg/m^3. Show that a steel ball with a diameter of 5cm weighs approximately 5N

Using Weight = mass*gravitational strength

Using: Mass = density * volume

Using Volume = (4/3)pir3

Radius = 2.5cm = 0.025m

Volume = (4/3)pi0.025

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Answered by Sameh H. Physics tutor
12353 Views

Generate an array of integers from 0 to 99 and split it into two smaller arrays. Each smaller array will contain half of the original.

Import numpy

originalArray = numpy.range(100)

split1 = originalArray[:len(originalArray)/2] #The use of a :X as an index into an array means that you want all values from the start to the Xt...

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Answered by Sameh H. Python tutor
5257 Views

Given that Sin(A) = 1/sqrt(3), show that Tan(A) = 1/sqrt(2)

Using: Tan(x) = Sin(x)/Cos(x)

Using: Cos(x) = sqrt(1-Sin2(x))

Cos(A) = sqrt(1-Sin2(A)) = sqrt(1-1/3) = sqrt(2)/sqrt(3)

Therefore: Tan(A) = Sin(A)/Cos(A) = (1/sqr...

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Answered by Sameh H. Maths tutor
4143 Views

How do I go about planning an 'unseen poetry' question?

First off, you are going to want to thoroughly read through and annotate the poem. Read the poem carefully at least twice through to make sure ...

AR
25655 Views

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