80 km is the correct answer .
Answer:
Hello there. I know its too late, but you could use one of your scientific experiments you did over the past few years.
You could make an solinoid.
Hope this helps! Lol
Answer:
Part a)
H = 26.8 m
Part b)
error = 7.18 %
Explanation:
Part a)
As the stone is dropped from height H then time taken by it to hit the floor is given as

now the sound will come back to the observer in the time

so we will have


so we have

solve above equation for H

Part b)
If sound reflection part is ignored then in that case



so here percentage error in height calculation is given as


Answer:
first option bro
Explanation:
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The correct answer is false