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How is gas exchange in a human facilitated?

The gas exchange of O2 and CO2 must occur between the air-filled alveoli of the lungs and our blood circulation running through our vessels. Near our lung alveoli lie capillaries coat the alveoli. The cap...

Answered by Hosna S. • Biology tutor

4612 Views

The curve C has the equation: 16y^3 +9x^2y-54x=0, find the x coordinates of the points on C where dy/dx = 0

C: 16y³ + 9x²y -54x = 0 d/dx(16y³) + d/dx(9x²y) + d/dx(-54x) = d/dx(0).............=>48y².dy/dx + 9x².dy/dx + y.18x - 54 = 0 dy/dx(48y<...

Answered by Elliot P. • Maths tutor

8672 Views

A person swims from a depth of 0.50 m to a depth of 1.70 m below the surface of the sea. density of the sea water = 1030 kg/m^3 gravitational field strength = 9.8 N/kg Calculate the increase in pressure on the swimmer. Give the Unit.

ΔP = Δh ρ g
Δh = 1.7 - 0.5 = 1.2 m ρ = 1030 kg/m³g = 9.8 N/kg
ΔP = 1.2 (m) x 1030 (kg/m³) x 9.8 (N/kg)
= 12,112.8 N/m² = 12,112.8 Pa

Answered by Elliot P. • Physics tutor

7727 Views

Is the demand for food likely to be Price elastic or Inelastic?

Definition: Price elasticity of Demand (PED) measures the responsiveness of Quantity Demanded to a change in the good's price.Food is considered a basic necessity, we cannot live without it and therefore ...

Answered by Frazer H. • Economics tutor

24073 Views

Explain fiscal policy and how it can be used

Fiscal policy is the use of governmental spending and taxation to influence aggregate demand (AD= C + I + G +(X-M)) in an economy. It can be used to boost economic growth, control inflation and stabilise ...

Answered by Annabel S. • Economics tutor

2162 Views