[填空题]
When the resistor R ilz +lowlr aj+f9 h88,a8htn0ln (Fig. dc h8lo/ :(qmb)4bzq;v q/f rxgn.k, wBelow) is $35\Omega$, the high-resistance voltmeter reads 9.7 V. When R is replaced by a $9.0-k\Omega$ resistor, the voltmeter reading drops to 8.1 V. What are the emf and internal resistance of the battery?
r $\approx$ $\Omega$(retain one decimal places)
$\varepsilon$ $\approx$ V(retain one decimal places)
