A small block with a mass of 0.08 kg is attached to a cord
passing through a hole in a
frictionless, horizontal surface
As shown in the Figure. The
block is originally revolving
at a distance of 0.90 m from the hole with a speed of 0.60 m's. The cord is then pulled from below. shortening the radius of the circle in which the block revolves to 0.30 m. At this new distance, the speed of the block is 3.00 ms. The average force of the hand of
the man while shortening the radius of the circle is​

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not