Which EVIDENCE STATEMENT below best support the claim : "As the vibration/oscillations increased in the
speaker so does the level of sound emitted"
Evidence that supports this claim is when energy increases the vibrations in the speaker
decrease and sound coming from speaker also decrease. I know this because when I increase
the volume dial/button sound becomes quieter and speaker moves less.
O Evidence that supports this claim is when energy increases so does the vibrations in the
speaker and sound coming from speaker. I know this because when I increase the volume
dial/button sound becomes louder and speaker moves more.

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.