Which of the following part is 1 s of 1 h?

Options

A. 0.00028 h
B. 0.0827 h
C. 0.0027 h
D. 0.0072 h

Answer

To solve the question "Which of the following part is 1 s of 1 h?", we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship Between Seconds and Hours**:
- We need to establish how many seconds are in one hour.
- We know that:
- 1 hour = 60 minutes
- 1 minute = 60 seconds

2. **Calculate the Total Seconds in One Hour**:
- To find the total number of seconds in one hour, we multiply the number of minutes by the number of seconds in a minute:
\[ 1 \text{ hour} = 60 \text{ minutes} \times 60 \text{ seconds/minute} = 3600 \text{ seconds} \]

3. **Determine the Fraction of One Second in One Hour**:
- Now, we need to find out what fraction of one hour is one second.
- We can express this as:
\[ 1 \text{ second} = \frac{1 \text{ second}}{3600 \text{ seconds}} \]
- This simplifies to:
\[ 1 \text{ second} = \frac{1}{3600} \text{ hours} \]

4. **Convert the Fraction to Decimal**:
- To convert \(\frac{1}{3600}\) into decimal form, we perform the division:
\[ 1 \div 3600 \approx 0.00027778 \text{ hours} \]
- This can be rounded to approximately \(0.00028\) hours.

5. **Conclusion**:
- Therefore, 1 second is equal to approximately \(0.00028\) hours.

### Final Answer:
1 second is approximately \(0.00028\) of 1 hour.