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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 ...

Answered by Dylan J. • Economics tutor

18594 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...

Answered by Ruth H. • Physics tutor

3266 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 c...

Answered by Ruth H. • Science tutor

3973 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 experi...

Answered by Clara B. • Philosophy tutor

25508 Views