Complete the following:
1 mean solar day = ………………… s.

Explanation

To find out how many seconds are in one mean solar day, we can follow these steps:

1. **Understand the duration of a mean solar day**: A mean solar day is defined as 24 hours.

2. **Convert hours to minutes**: Since there are 60 minutes in an hour, we can calculate the total number of minutes in 24 hours:
\[ 24 \text{ hours} \times 60 \text{ minutes/hour} = 1440 \text{ minutes} \]
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