Asound that measures 30 decibels is how many times louder than the human threshold of hearing

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 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2