(adsbygoogle = window.adsbygoogle || []).push({}); Just these two problems ! I'll be done. :)

Problem 12.

Given: specific heat of water = 4186 J/kg degrees Ceicuis

and water's latent heat of fusion = 3.33 *10^5 J/kg.

A 0.012 kg cube of ice at 0.0degrees Ceicuis is added to

0.459 kg of soup at 80.4degrees Ceicuis.

Assuming that the soup has the same specific

heat capacity as water, find the final tem-

perature of the soup after the ice has melted.

Answer in units of degrees Ceicuis..

Problem 13.When a driver brakes an automobile, fric-

tion between the brake disks and the brake

pads converts part of the car's translational

kinetic energy to internal energy.

If a 1610 kg automobile traveling at 28 m/s

comes to a halt after its brakes are applied,

how much can the temperature rise in each

of the four 3.8 kg steel brake disks? Assume

the disks are made of iron (cp = 448 J/kg *

degrees C)

and that all of the kinetic energy is distributed

in equal parts to the internal energy of the

brakes. Answer in units of degrees C.

Note: I really am lost? Need step-by-step help!!!

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# Homework Help: Just these two problems ! I'll be done.

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