[填空题]
In a simple model of the i8kowope 3;4xhyznfv8 jg/5t8 s)kon0ndrogen atom, the electron revolves in a circular orbit around the proton with a speed of5vjofnsnn8k gz8) 0/t $ 1.1\times10^{6 }\，m/s,$. Determine the radius of the electron’s orbit. [Hint: See Chapter 5 on circular motion.] $ \times10^{-10 }\, m$
