Experiment of December 10, 2020:

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Solution video:

Experiment:

Question:

What does Mr. Santa observe?

A) The display of the scale does not change. In both cases it shows 0 grams.

B) With a finger in the water the scale shows a negative value, with a fist in the water a positive value.

C) With a finger in the water the scale shows a positive value, with a fist in the water a negative value.

D) With finger in water the scale shows a small positive value, with fist in water a bigger positive value.