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ALL CIE PHYSICS DOUBTS HERE !!!

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WARRIOR:
What will happen to the water level if someone was sitting in a boat floating on a very small pond and then he take the anchor  out of the boat and drop it into the water? ( assuming the anchor reached the bottom of the sea  and the boat stops )

$!$RatJumper$!$:
W04 Q1 (b)(ii) please

$!$RatJumper$!$:
And may someone please put the values of all the frequencies & wavelengths in the electromagnetic spectrum.

Thankx

Deadly_king:

--- Quote from: Kimo Jesus on November 07, 2010, 02:24:34 pm ---What will happen to the water level if someone was sitting in a boat floating on a very small pond and then he take the anchor  out of the boat and drop it into the water? ( assuming the anchor reached the bottom of the sea  and the boat stops )

--- End quote ---

The level of water will rise.

But we may not note this rise due to the large surface area covered by the pond, even if the pond is very small. ;)

The volume displaced by the anchor upon sinking may be negligible compared to the total volume of water in the pond.

TJ-56:

--- Quote from: $!$RatJumper$!$ on November 07, 2010, 02:36:40 pm ---W04 Q1 (b)(ii) please

--- End quote ---
If the percentage uncertainty of the diameter is (0.02/0.50)*100% = 4%
Area is pi* r^2 , so to calculate the uncertainty of a squared value, we multiply it by the power, and here the power is 2, so 4% *2 = 8%
Hope that was helpful

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