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Given that during a total solar eclipse the Sun is fully hidden by the Moon, calculate the radius of the Moon. (You may use the following: Solar radius 700,000 km, Sun-Earth distance 150,000,000 km, Moon-Earth distance 400,000 km)

Let's prepare a diagram with the Sun on the right, Moon in the middle and Earth on the left. Their centres are collinear. Moreover, draw right angled triangles such that the right angle opens from the cen...

VN
Answered by Viktoria N. • PAT tutor
2284 Views

Determine an approximate value for the acceleration of free fall using a tennis ball, metre ruler and a stopwatch.

Drop the ball from a given height that is measured with the ruler and measure the time it takes for it to reach the ground using the stopwatch. Use the appropriate SUVAT equation of motion: we have a heig...

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Answered by Viktoria N. • Physics tutor
10651 Views

Solve algebraically for a and b: 6a+b=16, 5a-2b=19

Multiply equation 1) by 2 : 12a+2b=32. There are alternate signs of b and so therefore add the equations together: 17a=51. Solve for a: a=3. Sub a into one of the equations to find b: 5*3-2b=19b=-2. The f...

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Answered by Sorcha S. • Maths tutor
2608 Views

What are the principles that define the Biological level of analysis ?

There are 3 principles that define the Biological level of analysis , and each come with a research study conducted by researchers :Principle 1 : Biological correlates of behaviour -

Answered by • Psychology tutor
1807 Views

How do I ensure a good mark in a Philosophy Paper 1 exam?

The key to obtaining all the marks in an IB philosphy exam is to know the structure of an essay and to have a clear approach to answer all (or almost all) the topics that are covered in the IB philosphy s...

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Answered by Anna B. • Philosophy tutor
9276 Views

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