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The refractory period is composed of two parts. The first part is the absolute refractory period in which another action potential cannot be stimulated in the nerve. In the relative refractory period that...

To understand the difference between these two common scales, we need to think about where all scales come from in the first place. The typical major scale, containing seven notes is where all scales will...

A u-shaped valley starts life at high altitude near the peaks of a mountain range. As snow falls, it gradually compacts due to pressure and turns into ice. As this ice gets heavier and heavier, it becomes...

a) 600N arrow down for weight, no air resistance arrow, acceleration = 10m/s^2

b) 600N arrow down, 300N arrow up for air resistance, acceleration = 5m/s^2    (Using F = ma)

c) 600N arrows up...

Product rule:      dy/dx = uv' + u'v dy/dx = 2x(3x + 1) + x^2(3) dy/dx = 2x(3x + 1) +3x^2 dy/dx = 6x^2 + 2x + 3x^2 dy/dx = 9x^2 + 2x dy/dx = x(9x + 2)