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Describe with a real world example, price elasticity of demand

Price elasticity of demand (PED) is a measure used to show the responsiveness of the quantity demand of a good to a price change and is generally expressed in percentages. This is extremely important for fir...
DJ
Answered by Dylan J. • Economics tutor
19129 Views

a )John heats up 2kg of water from 20 degrees c to 80 degrees c. How much energy input did this require? b )When John weighs the water at the end, he has less than he started with. Why might this be? c) What hazards are in this experiment?

a) energy transferred = mass.specific heat capacity.temperature change, or E = m.c.theta. c is provided at 4181 joules per kg. so E = 2.4181.(80-20) = 501720 joules b) some water has evaporated off as it was...
RH
Answered by Ruth H. • Physics tutor
3573 Views

How has the camel [shown, with summarising information] adapted to survive the desert? Briefly explain adaptation by natural selection.

Answers can include: lomg eyelashes and closing nostrils to protect from sand in the wind, large eyebrow ridge and thick eyebrows to protect from sun, thick fur to contain heat during cold nights, sandy colo...
RH
Answered by Ruth H. • Science tutor
4277 Views

Explain the difference between a priori and a posteriori.

Simply defined, a priori knowledge is knowledge that is gained from ones mind with full emancipation from the body and the senses. A posteriori knowledge is empirically drawn from experiences and senses. Tho...
CB
Answered by Clara B. • Philosophy tutor
27175 Views

Discuss how you would perform the role of Lady Windermere in three separate sections of the play, in order to reveal her change in attitude towards Mrs Erlynne.

[EXTRACT OF WHAT WOULD HAVE TO BE A LONGER ESSAY IN AN EXAM] When Lady Windermere says to her husband, ‘You are very jealous of Mrs Erlynne’s honour’, I would follow Wilde’s stage direction and ‘turn to him’...
CB
Answered by Clara B. • Drama tutor
1988 Views