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4
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Determine Earth's radius with stopwatch at sunset [closed]
This question appeared on Bangladesh physics Olympiad 2014, Sylhet, Bangladesh for students of class 9 and 10.
I really tried to solve this, but I failed. Please help.
Suppose that, while lying on ...
- 73
0
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1
answer
572
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Calculating the Velocity of an object far far away
I saw a satellite the other day, it moved very fast through the night sky.
Now I know it took around 110 seconds for it to fully travel out of the night sky(out of my visual bounds assuming, that I'...
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1
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195
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If the Earth were a pool ball, could I feel mountains? [closed]
If the earth (12,742 km diameter) were scaled down to the size of a pool ball (61mm diameter), the mountain ranges would still exist, obviously. But would a typical human be able to feel those ...
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How far is the horizon, if a 2m tall man watches to the sea?
How far is the horizon, if a $r=2 m$ tall man watches to the sea?
I have calculated that it would be even just about 6 km. if R = radius of earth( $6370 \cdot10^3$ m ).
By pythagorean theorem we get....
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