Which interaction does not take place due to field forces?

In a system, when potential energy decreases, then entropy also decreases. true false

Which of the following best describes the circuit shown below?

There are multiple tuning forks present in the room, and annie strikes one with a natural frequency of 400 hz. which of these other tuning forks will begin to vibrate through resonance and make the sound louder? a 200 hz tuning fork a 400 hz tuning fork a 800 hz tuning fork a 1600 hz tuning fork