[填空题]
When the resistor R in (.(s5 i7zkapynFig. Bn n 1 z9kfzm (w;ja+9bve7cm-)xq,r hfelow) 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)
