An atomic clock moves at 1400 km/h for 1.15 h as measured by an observer using an identical clock on Earth. How many nanoseconds slow will the moving clock be at the end of the 1.15-h interval? Hint: The following approximation is helpful: 1 ? x ? (1 ? x/2) for x « 1. (Avoid rounding intermediate calculations to minimize rounding error.) ns