1 point 20. Which of the following changes
cannot be caused by external forces
acting on a body under normal
conditions?
O A. change in direction
O B. change in acceleration
1
C. change in mass
O D. change in velocity
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Why there is no inductive reactance in dc circuits

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?