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What height do geostationary satellites orbit above the Earths surface?

You are given the following values: M e = 6x10 24 kgR e = 6.37x10 6 mA geostationary satellite appears to an observer on the ground to always be at the same position on the sky. This means its orbit must be ...
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Answered by Will M. • Physics tutor
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Some phenotypes, such as colour-blindness, are caused by sex-linked genes. Explain why colour-blindness is more common in men than in women

Sex-linked genes are located on the sex-chromosomes, X and Y. Females have two X-chromosomes, XX, and males have one X and one Y-chromosome, XY. The X-chromosome is much larger than the Y-chromosome and so c...
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Answered by Zoe N. • Biology tutor
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“Overall GDP is the best way to measure social and economic well-being.” To what extent do you agree? (20)

Gross domestic product is the total value of all finished goods and services produced by a country in a single year and is expressed in amount per head. As an aggregate measure of the total economic producti...
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Answered by Phoebe C. • Geography tutor
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Write down the equations of the three asymptotes and the coordinates of the points where the curve y = (3x+2)(x-3)/(x-2)(x+1) crosses the axes.

Step 1: find the asymptotes There are two kinds of asymptotes we look for: vertical and horizontal .The vertical ones happen when y goes to negative or positive infinity, which is when the denominator of the...
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How can I find the stationary point of y = e^2x cos x?

At a stationary point of y, dy/dx = 0. Step 1: Let's find dy/dx first by differentiating. To differentiate the product of two functions, we can use the product rule :d(fg)/dx = f * dg/dx + df/dx * g. So dy/d...
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Answered by Meg T. • Maths tutor
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