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A bullet with a mass m_b=11.5 g is fired into a block of wood at velocity...

A bullet with a mass m_b=11.5 g is fired into a block of wood at velocity v_b=265 m/s. The block is attached to a spring that has spring constant k of 205 N/m. The block and bullet continue to move, compressing the spring by 35.0 cm before the whole system momentarily comes to a stop. Assuming that the surface on which the block is resting is frictionless, determine the mass of the wooden block.

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