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Q. 19

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 543

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Short Answer

Two cars collide head-on while each is traveling at 80 km/h.

Suppose all their kinetic energy is transformed into the thermal

energy of the wrecks. What is the temperature increase of each

car? You can assume that each car’s specific heat is that of iron.

See the step by step solution

Step by Step Solution

Step 1: Given information

Their initial velocity is and the final velocity is

formula used:

The kinetic energy equation:

Step 2:Calculation

The velocity, in units of

The specific heat of iron:

Substituting values:

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