A 0.12kg bullet is initially traveling 101m/s when it strikes a stationary 4kg block. After the collision the block (with the bullet embedded inside) swings up as shown. Neglect drag and the initial height of the bullet above the reference level. time 1 time 2 time 3 p КЕ GPE kg m/s v bullet (time 1) 12.1 block* (time 2) block* (time 3) h * The bullet is embedded in the block at these times. How fast was the block traveling after the impact? m/s How much heat was generated during the impact? To what height (h) did the block swing?

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The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.