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Medical & Biological Physics
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Specific heat produced in conductive tissue under the UHF-therapy is determined by the formula
The amplitude of the ECG calibration signal is equal to 10 mm when voltage of 1 mV is applied. The height of R wave is 8 mm. Determine the voltage amplitude of this wave (in mV).
Dynamic range of the amplifier falls into the range from Uin1 =0,1 mV to Uin2 =100 mV. Calculate the magnitude of the dynamic range in decibels.
If the duty cycle is equal to 2 then
If the temperature difference between the thermocouple junctions is equal to 20°С, then the thermocouple generates electromotive force of 0.6 mV. Determine the thermocouple sensitivity (in μV/°С)
The dynamic range of the amplifier is equal to 60 dB. Determine Uin2 (in mV) if Uin1 is equal to 0.1 mV.
Resistance of the capacitor is equal to 1,0 kΩ, the capacitance of the capacitor is 4,0 μF. Determine the angular frequency (in rad/s).
During rheography the impedance change of blood-filling tissue occurs due to the change of
Impedance is
The UHF-therapy procedure is conducted under the condition