A 00030-Kg Lead Bullet Is Traveling at a Speed of 300

question 1

Multiple Choice

A 0.0030-kg lead bullet is traveling at a speed of 300 m/s when it embeds in a block of ice at 0 $\degree$ C. If all the heat generated goes into melting ice, what quantity of ice is melted? (L_f = 80 kcal/kg, the specific heat of lead = 0.03 kcal/kg· $\degree$ C, and 1 kcal = 4186 J)

• A) 1.47 *10 ^{- 2} kg
• B) 4.0 *10 ^{- 4} kg
• C) 3.2 *10^-3 kg
• D) 2.6 *10^-4 kg

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