How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Martin Your Own Question

Martin, Engineer
Category: General
Satisfied Customers: 4777
Experience:  i'm 41 and i never stopped studying and experimenting
Type Your Question Here...
Martin is online now
A new question is answered every 9 seconds

A 0.058 kg aluminum bullet traveling at 489 m/s strikes an

This answer was rated:

A 0.058 kg aluminum bullet traveling at 489 m/s strikes an armor plate and comes to a stop. If all its energy is converted to heat that is absorbed by the bullet, what is the bullet's temperature change in degrees Celsius?
Hello, welcome to JustAnswer.

I will work on that and come back to you.
We first need to find the kinetic energy in the bullet just before the impact.

Q = (1/2)*mvˆ2 = 0.5 * 0.058 * 489ˆ2 = 6934.5 Joule

Specific heat (c) of aluminum is 900 J(Kg*degree_Celcius)

The temperature delta = Q/(mc) = 6934/(0.058*900) = 132.84 Celcius.
Martin and 62 other General Specialists are ready to help you