[填空题]
A cardiac defibrillam b3m:srx,px tv/n9;gfbok1n 7 ae n39tor3 +z, +h2 +q0mq djvwvxp0aixr is used to shock a heart that is beating erratically. A capacitor in this device is charged to 5.0 kV and stores 12+vxvj+0pxr 0, qwi q23zmahd+00 J of energy. What is its capacitance? $ \times10^{-5 }\,F$