37 Rutherford equals

Options

A. 1 milli bacquerel
B. 1 milli curie
C. 1 micro bacquerel
D. 1 micro curie

Answer

To solve the question "37 Rutherford equals," we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Units**:
- We need to recognize that Rutherford is a unit of radioactivity, similar to Curie.

2. **Know the Conversion Factor**:
- From the information given, we know that 1 Curie (Ci) is equal to \( 37 \times 10^3 \) Rutherford (Rd).

3. **Set Up the Equation**:
- We want to convert 37 Rutherford to Curie. Using the conversion factor, we can express this as:
\[ 37 \text{ Rutherford} = \frac{37 \text{ Rutherford}}{37 \times 10^3 \text{ Rutherford}} \times 1 \text{ Curie} \]

4. **Simplify the Equation**:
- The 37 Rutherford cancels out, leading to:
\[ 37 \text{ Rutherford} = \frac{1}{10^3} \text{ Curie} \]

5. **Convert to MilliCurie**:
- Since \( 1 \text{ Curie} = 1000 \text{ milliCurie} \), we can express \( \frac{1}{10^3} \text{ Curie} \) as:
\[ 37 \text{ Rutherford} = 1 \text{ milliCurie} \]

6. **Final Answer**:
- Therefore, 37 Rutherford equals 1 milliCurie.

### Conclusion:
The answer is that 37 Rutherford is equal to 1 milliCurie.