LON-CAPA. The Bullet an x C A 3.20-g Lead Bullet At 3 x CA 2.65g Lead Bullet At

Question

LON-CAPA. The Bullet an x C A 3.20-g Lead Bullet At 3 x CA 2.65g Lead Bullet At 31 x C capa7.phy.ohio.edu 1 prob 58. problem#0 Megan Wolfe Student section: 104 Physics 2001/Fall 2016 Main Menu Contents Grades Course Contents Assignment 13 The Bullet and the Ice The Bullet and the Ice Due this Friday, Dec 2 at 11:59 pm (EST) A 2.65g lead bullet at 31.9OC is fired at a speed of 262 m/s into a large block of ice at OOC, in which it embeds itself. What quantity of ice melts? Submit Answer Incorrect. Tries 7/10 Previous Tries his discussion is closed. e a C LON-CAPA The Bul... O Ask me anything Messages Courses Help Logout Timer Notes d Evaluate Feedback Print Info Send Feedback 2:00 PM 11/28/2016 R4

Explanation / Answer

mass of the lead bullet m = 2.65 g = 2.65 x10 -3 kg

Initial tempearture of the bullet t = 31.9 o C

Speed of the bullet v = 262 m/s

heat lost by bullet = heat gain by ice

Change in kinetic energy of the bullet + Heat lost by bullet from 31.9 o C to 0 o C = heat gain by ice

(1/2) mv 2 + mC (31.9-0) = ML Where C = Specific heat of lead = 128 J / kg K

L = Latent heat of fusion of ice = 333.55x10 3 J / kg

[0.5x2.65 x10 -3 x 262 2 ] + [ (2.65 x10 -3 )(128)(31.9) ] = M(333.55x10 3 )

M(333.55x10 3 ) = 101.773

M = 3.051x10 -4 kg

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