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3 years ago

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Which of these is an example of pseudoscience? chemistry astrology astronomy mathematics

1 answer:

Contact [7]3 years ago

6 0

Astrology a common belief I. Society today that says the alignment of celestial bodies have some effect on the behaviour or future of a persons life. The opposite, in fact, has been proven in real science that the alignment of celestial bodies has no effect on how people act or on their future

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If questions asked in a research study to do not accurately relate to the subject or construct being studied, the study’s ______

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Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. In a typical strike, the chameleon'

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When an electric current flows through a wire, the current produces which of the following?

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A 259-kV power transmission line carrying 429 A is hung from grounded metal towers by ceramic insulators, each having a 0.71×109

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Answer:

The resistance is $7.47\times10^{6}\ \Omega$ .

Explanation:

Given that,

Power = 259 kV

Current = 429 A

Resistance $R=0.71\times10^{9}\ Omega$

We need to calculate the current in each insulator

Using formula of current

$I=\dfrac{P}{R}$

Put the value into the formula

$I=\dfrac{259\times10^{3}}{0.71\times10^{9}}$

$I=3.64\times10^{-4}\ A$

So all 95 insulators are in parallel

We need to calculate the resistance

Using formula of resistance

$\dfrac{1}{R}=\sum_{i=1}^{95}\dfrac{1}{R_{i}}$

Put the value into the formula

$\dfrac{1}{R}=\dfrac{95}{0.71\times10^{9}}$

$\dfrac{1}{R}=1.338\times10^{-7}$

$R=\dfrac{1}{1.338\times10^{-7}}$

$R=7473841.5=7.47\times10^{6}\ \Omega$

Hence, The resistance is $7.47\times10^{6}\ \Omega$ .

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3 years ago