The 3000-kg anvil a of the drop forge is mounted on a nest of heavy coil springs having a combined stiffness of 2.8(106) n/ m. the 600-kg hammer b falls 500 mm from rest and strikes the anvil, which suffers a maximum downward defl ection of 24 mm from its equilibrium position. determine the height h of rebound of the hammer and the coefficient of restitution which applies.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

measuring things 1 litre of water

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