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Three forces (4i + 7j)N, (pi +5j)N and (-8i+qj) N act on a particle of mass 5 kg to produce an acceleration of (2i - j) m s 2 . No other forces act on the particle. Find the resultant force acting on the particle in terms of p and q. THEN find p and Q

Three forces : (4i + 7j)N , (pi +5j)N , (-8i+qj) N Mass = 5 kg acceleration = (2i - j) A.Collect like terms (4+p-8)i +(7+5+q)j = (-4+p...

Answered by Shane L. • Maths tutor

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Calculate the mass of sodium amide needed to obtain 550 g of sodium azide, assuming there is a 95.0% yield of sodium azide. Give your answer to 3 significant figures.

2NaNH2 + N2O --> NaN3 + NaOH + NH3

Mr(NaN3) = 65 Mr(NaNH2) = 39
n(NaN3) = 550/65 = 8.46
100% NaN3 = 550/65 x 100/95 = 8.91
n(NaNH2) = 2 x 8.91 = 17.8
m(NaNH2) = 17....

Answered by Kathleen M. • Chemistry tutor

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'Desdemona is a a powerless victim in Othello' to what extent do you agree?

INTRODUCTION:

In Othello, ,Shakespeare keeps within the time and social constraints surronding women when creating the tragic victim, Desdemona. I agree with the statement as although one may argue...

Answered by Yzabelle B. • English Literature tutor

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When you integrate, why do you need to add a +C on the end?

Integration can be used to undo differentiation. So if you had an equation that was y=5x+2 and differentiated to get dy/dx=5. When you integrate it you would only get y=5x, so the +2 is lost, to make sure...

Answered by Katie M. • Maths tutor

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Referring to extracts from your anthology of scores, explain your incorporation of two different musical techniques within your composition.

Haydn's ornamental use of non-harmony échappée notes, such as the first A-flat in the first violin part of his second string quartet in E-flat (fourth movement, b.1), gave me the idea of u...

Answered by Thomas H. • Music tutor

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