1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wa

  1. Dec 11, 2011 #1
    1. The problem statement, all variables and given/known data
    A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wall without splatter.
    How fast was it going?
    What is the force on the wall?
    If the wall is made of 1kg of marble, what temperature will it reach?



    2. Relevant equations
    I don't know how to find the temp of the marble...


    3. The attempt at a solution

    Q = ΔMcΔT
    I found Q=2.24Joules
    Force is 59.1 * 10^3 Newtons
     
  2. jcsd
  3. Dec 11, 2011 #2

    Redbelly98

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Re: Theromdynamics

    Welcome to Physics Forums! :smile:

    Can you show how you calculated Q and the Force? I get something different for Q.

    Your calculation for Q should include the values you used for c, ΔT, and the melting point of lead.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wa
  1. Dart strikes lead sphere (Replies: 10)

Loading...