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Category > Physics Posted 20 Apr 2017 My Price 4.00

A bullet

A bullet made of a lead alloy has specific heat 148 J/kg-K, melting point 850o C, latent heat of fusion 18.9 kJ/kg. The bullet is fired and becomes buried in a block of wood. Find the minimum speed at which the bullet must be moving, in m/s, so that when it stops the bullet will be entirely melted. Assume:

- the bullet starts at temperature 36.2o C.

- negligible energy is lost heating the wood or the air.

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SuperTutor
(15)
Status NEW Posted 20 Apr 2017 03:04 AM My Price 4.00

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