Physics, 09.04.2021 01:00 19colemankl
A hammer of mass 200g is dropped from the top of the roof of a two-storey building
to the ground. Another hammer of equal mass fell from the coffee table to the ground.
Given that the height of the two-storey building, and the coffee table are 10 m and 1.2m
respectively. Show that a hammer dropped from two store building roof does more work
than a hammer falling from a coffee table.​
Answers: 1
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Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
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Elements that have one valence electron and are very reactive are called
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A hammer of mass 200g is dropped from the top of the roof of a two-storey building
to the ground. A...
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