The two speakers emit sound that is 180°out of phase and of a single frequency,ƒ.(a)does larry hear a sound intensity that is a maximum or a minimum? does your answer depend on the frequency of the sound? explain.(b)find the lowest two frequencies that produce a maximum sound intensity at the positions of moe and curly.

are you like autistic or something?

xd

i guess it’s a and b

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.