[填空题]
What is thedistance from the Earth’s center to a pointwt;wrlwrh t/ 9(lob3. outside thel r -jpta n0lz.,94dnz Earth where thegravitational acceleration due to the Eart n4j-p.zznltl0 da,r 9h is $\frac{1}{10}$ of its value atthe Earth’s surface? $\times10^7$
