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Is the 'nuclear family' still relevant in today's society?

The tradiitional idea of a nuclear family, consisting of a husband and wife and their children, can still be seen as the dominant form of family today, however changes in society in recent decades have seen ...
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Answered by Ed P. • Sociology tutor
24987 Views

Solve: 7x - 20 = 3x + 4

7x = 3x + 24 4x = 24 x = 24 / 4 x = 6
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Answered by Alex G. • Maths tutor
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Describe the basic principles of ultrasound imaging (2 marks)

Ultrasound is any frequency above that of human hearing - around 20 kilohertz . Ultrasound imaging works by emitting a known intensity of ultrasound at a specific frequency, and capturing the reflected sound...
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Answered by Alex G. • Physics tutor
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Find the integral between 1 and -2 for (4-x^2-3x^3)

= [4x - 1/3x 3 - 3/4x 4 ] 1 -2 = (4(1) - 1/3(1) 3 - 3/4(1) 4 ) - (4(-2) - 1/3(-2) 3 - 3/4(-2) 4 ) =(2 11/12) - (-8 + 8/3 - 12) =(2 11/12) - (-17 1/3) = 20 1 /4
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Answered by Alex G. • Maths tutor
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Would you expect a calcium ion to be bigger, smaller or the same size as a calcium atom? Give TWO reasons to explain your answer.

Calcuim is in group two which means when it forms an ion it will donate its two outer elections, this means a calcium ion will be smaller as it has one less shell of electrons.
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Answered by Urma C. • Chemistry tutor
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