Homework Help: Physics

Posted by Jesse on Sunday, December 19, 2010 at 12:49pm.

A 0.003 0-kg lead bullet is traveling at a speed of 240 m/s when it embeds in a block of ice at 0°C. If all the heat generated goes into melting ice, what quantity of ice is melted? (Lf = 80 kcal/kg, the specific heat of lead = 0.03 kcal/kg×°C, and 1 kcal = 4 186 J)

Physics - Anonymous, Thursday, October 13, 2011 at 2:46am
??????????
Physics - Anonymous, Saturday, December 10, 2011 at 7:22am
A 0.003 0-kg lead bullet is traveling at a speed of 240 m/s when it embeds in a block of ice at 0°C. If all the heat generated goes into melting ice, what quantity of ice is melted?
Physics - Novindra, Friday, May 18, 2012 at 11:30am
first get the KE of the bullet
KE = ½mV² = ½(0.003)(240)² = 86.4J

heat of fusion of ice is 334 kJ/kg
set the KE from above to melting ice
86.4J = 334000 J/kg x M
solve for M
M = 0.0002587 kg of ice (d)

sorry, I use metric (SI) system only, which does not include calories.

Answer this Question

Related Questions

physics - A 3.50 g bullet is fired horizontally at two blocks at rest on a ...
physics - a 35 kg bullet strikes a 5 kg wooden block and embeds itself in the ...
Physics - A 2.50g bullet, traveling at a speed of 425m/s, strikes the wooden ...
PHYSICS 102E - 1. How much ice at -10 degrees Celsius is required to cool a ...
Physics 2 - A 10 g bullet is fired into, and embeds itself in, a 2 kg block ...
Physics - A 12.8 gram bullet embeds itself in a 2.370 kg block on a horizontal ...
Physics - A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal ...
Physics - A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a ...
Physics - URGENT - A small block of mass 5 kg initially rests on a track at the ...
Physics - I have ten problems left on my homework that I need help with. My ...

For Further Reading

First Name:
School Subject:
Answer: