Recent content by qorizon

How are they formed in the glass considering I've hit only the table and not the cup? And why the concentric circles instead of just random waves?

So I have a cup of cold water placed on a table, as I hit the table with my palm I'm seeing concentric circles forming and disappearing on the water surface. Why is this happening? Are they waves or something else?

Whenever there is a field there will be a force whenever the field interacts with an object placed in that field? Is this always correct?

Thank you for the really helpful explanation!

Homework Statement [/B] a=12.26 +/- 0.08 b=0.25 +/- 0.05 e=1.2 +/- 0.2 Evaluate the uncertainty of following calculations Part 1. z= 5(ab/e) Part 2. p= 3e - b The Attempt at a Solution I attempted part 1 like this Δz/z = 5 (Δa/a + Δb/b + Δe/e) ... Calculated Δz to be 20 but the answer is...