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For rectangular pulse with the pulse duration of 10 ms the duty cycle is equal to 5. Determine the frequency of the pulse (in Hz).
The dependence of metal resistance R on the temperature t is given by the formula
Choose the physiotherapy procedures based on the action of direct current
The amplitude characteristic of an amplifier is the dependence of
Speed of the ECG recording is equal to 25mm/s, length of the QRS complex is 2 mm, length of the ST interval is 6 mm. Determine the duration of ventricular action potential (in ms).
For some tissue, the rheobase is 3 mA and the chronaxy is 5 ms. Determine the threshold current (in mA) if the pulse duration is 2.5 ms.
ECG recording speed is equal to 25mm/s, length of the PQ interval is 4 mm, length of the QRS complex is 1,5 mm, length of the ST interval is 8 mm. Determine the time of ventricular depolarization (in ms).
According to the Einthoven theory, the heart is considered as:
Pulses are symmetrical if
Thermocouple with the sensitivity of 15 μV/°С generates electromotive force of 0.45 mV. Determine the temperature of measurement junction of the thermocouple if the temperature of reference junction is equal to 10°С.