Answer
That amount in grays is equal to: 0.5 Gy.
Work Step by Step
1. Identify the objective.
- Convert from "rad" to "grays" (Gy).
2. Find the conversion factor.
- According to the Table 5.4 (Page 146): $1 Gy = 100 rad$
Conversion factor: $\frac{1 Gy}{100 rad}$ and $\frac{100 rad}{1Gy}$
3. Calculate the value in grays (Gy):
$50 rad \times \frac{1 Gy}{100rad} = 0.5 Gy$
4. Adjust the value to the correct number of significant figures:
- Data with lowest SF's: $50 rad$ - 1 SF.
Therefore, the result must have 1 SF: $0.5 Gy$
