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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 ...

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...

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...

To find the density, we need to divide mass by volume, and we already know the mass, so must find the volume.  V = 4/3.pi.r^2, and plugging in r=6 gives V = 48.pi, about 150.8 cm^3. The mass is 1710, whic...

ROM stands for Read Only Memory and RAM stands for Random Access Memory. ROM is non-volatile which means that it stores the information on it permanently and read-only. It stores the information and instr...