Chapter 32, Problem 50PE

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

Chapter
Section

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

# A large power reactor that has been in operation for some months is turned off, but residual activity in the core still produces 150 MW of power. If the average energy per decay of the fission products is 1.00 MeV, what is the core activity in curies?

To determine

The core activity of the large power reactor with residual activity that produces a power of 150 MW of power.

Explanation

Given info:

Power produced by the reactor

â€ƒâ€ƒP=150Â MW

Average energy per decay

â€ƒâ€ƒE=1.00Â MeV

Formula:

The activity R of the core is given by,

â€ƒâ€ƒR=PE

Calculation:

Express the energy per decay in joules.

â€ƒâ€ƒE=1.00Â MeVÃ—1.6Ã— 10 âˆ’13J1Â MeV=1.6Ã—10âˆ’13J

Calculate the activity of the core.

â€ƒâ€ƒR=PE=150Ã— 106J/s1

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