The correct answer is visible light, or more precisely the light spectrum. All colors exist because of it and other colors are variations of these colors or mixtures of them.
The variable you can change in an experiment is ( B ) A dependent variable
Answer:
Thirty years ago, the culture of American sports took a new course. An idea shouldered by a former sports communication executive, along with his son and other partners, would go on to transform the way we consume, analyze and interpret the world of athletics, and would influence international sport culture as well. While sports have always acted as a medium for those looking to escape the drudgeries of work, a way to channel negative emotions into something engaging and entertaining, ESPN presented a new opportunity for fans: an all-encompassing cable network for not only sports itself but also for the culture surrounding sports.,
Explanation:
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In all the sections of the pipe, volumetric flow rate is the same. Therefore,
Q1 = Q2
Q = VA, V = velocity, A = Cross-sectional area.
Then,
V1A1 = V2A2
But,
A = πD^2/4
Then,
V1·πD1^2/4 = V2·πD2^2/4
V1·D1^2 = V2·D2^2
But
D2/D1 = 86% = 0.86, or D1/D2 = 1/0.86
Therefore,
V2 = (V1D1^2)/D2^2 = V1·(D1/D2)^2 = 66*(1/0.86)^2 = 89.24 m/s
The speed in the smaller section is 89.24 m/s.
