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What is unitary price elasticity of demand?

Price elasticity of demand (PED) is the responsiveness of quantity demanded to a change in price. Effectively, how much will people increase/decrease the quantity they buy of a good relative to the amount pr...
AS
Answered by Alfie S. • Economics tutor
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A particle A of mass 0.1kg is moving at a speed of 1.5m/s to the right. It collides with a particle B of mass 0.3kg moving at a speed of 1.1m/s to the right. Calculate change in momentum of particle A if particle B has a speed of 1.4m/s after collision.

Momentum is conserved during the collision.Momentum = mass x velocityMomentum before = momentum after(mv) P1 + (mv) Q1 = (mv) P2 + (mv) Q2 (0.1 x 1.5) + (0.3 x 1.1) = 0.1v P2 + (0.3 x 1.4)v P2 = 0.6m/sChange...
JS
Answered by Juliet S. • Maths tutor
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How would I recognise a Baroque piece of Music?

Baroque music is broadly defined by complex texture, functional harmony, and use of ornamentation. The texture of a Baroque piece of music will likely be made up of interweaving melodic lines , sometimes mak...
RE
Answered by Rowan E. • Music tutor
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What is the area under the graph of (x^2)*sin(x) between 0 and pi

To solve this integral you need to use integration by parts twice. You separate the two term in the integral into x^2 and sin(x). You then multiple x^2 by the integral of sin(x) (-cos(x)) and apply the upper...
KP
Answered by Khalil P. • Maths tutor
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I've been studying Latin for years now, but I still struggle with the unseen prose paper. What can I do?

The key to translating Latin is reading through the text several times, without worrying about translating words immediately. If you are taking OCR exams, then, you're sure that the text will be by Livy, and...
ED
Answered by Emanuele D. • Latin tutor
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