The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls “Clear!” and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 × 10 2 W · s is to be delivered from a 30.0- μ F capacitor. To what potential difference must it be charged?
The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls “Clear!” and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 × 10 2 W · s is to be delivered from a 30.0- μ F capacitor. To what potential difference must it be charged?
Solution Summary: The author explains the formula to calculate the potential difference, which is 4.47kV.
The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls “Clear!” and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 × 102 W · s is to be delivered from a 30.0-μF capacitor. To what potential difference must it be charged?
The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls “Clear!” and pushes a button on one paddle to discharge the capacitor through the patient’s chest. Assume an energy of 300 W ? s is to be delivered from a 30.0-μF capacitor. To what potential difference must it be charged?
A heart attack often leads to a condition called fibrillation in which the heart’s action lose their synchronization and is unable to pump blood effectively. This condition can often be corrected by an electric shock to the heart that completely stops it for the moment; the heart may then again start spontaneously in its normal rhythm.An appropriate such shock can be provided by a discharge of a 10 μF capacitor that has been charged to a potential difference of 6000V. (a). What energy is released as a current pulse? (b) How much charge passes through the patient’s body? (c) If the pulse lasts 5ms, what is the average current that passes through the patient’s body?
The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls. "Clear!" and pushes a button on one paddle to discharge the capacitor through the patient's chest. Assume an energy of 325 W · s is to be delivered from a 30.0-?F capacitor. To what potential difference must it be charged?
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