Suppose that a NY Times article indicates that wild salmon indicates that wild salmon is a healthy food because it provides lots of omega 3 nutrients. During the same period, the number of wild salmon returning to spawn in Alaska has grown dramatically. Now suppose that an entrepreneur finds a way to raise salmon at a much lower cost than had previously been the case. Assume that most consumers believe that wild salmon and domestic salmon are similar products. This technological change:(This is an extension of question 3, not a repeat)a. will unambiguously cause the equilibrium quantity of wild salmon to riseb. will unambiguously cause the equilibrium quantity of wild salmon to fallc. will have no impact on the equilibrium quantity of wild salmond. may cause the equilibrium quantity of wild salmon to rise, fall, or remain the same

sound is invisible, but sometimes we can feel it. when a kettle-drum is thumped with a stick that time the tight drum skin moving up and down very quickly for some time and then it pumped sound waves into the air. loudspeakers also work in a similar manner.

components of a speaker:

electromagnet

in order to translate an electrical signal into an audible sound, an electromagnet is used in looudspeakers

  suspension

suspension is used to   center the voice coil in the gap of the magnet and it exerts a restoring force to keep it there. suspension is used to limits the maximum mechanical excursion of the diaphragm and voice coil.

voice coil

voice coil is a coil of wire which is attached to the apex of a loudspeaker cone. it provides the motive force to the cone by the reaction of a magnetic field to the current passing through it.

cone

in a   loudspeaker, a   thin, semi-rigid membrane attached to the voice coil, which moves in a magnetic gap due to which it vibrates   and produced sound. it is known as diaphragm and it can also be called a cone, though not all speaker diaphragms are cone-shaped.

surround

surround is also known as front suspension. surround is used to join the cone to the chassis. together with the suspension it controls the cone excursion, and it is also used to   determine how energy which is   travelling through the cone is absorbed, and how the speaker limits when it reaches the ends of its travel.

dustcap

dustcap is used to protect the voice coil from dust and dirt. it is a part of the cone.

how speaker work

the outer part of the cone is fastened to the outer part of the loudspeaker's circular metal rim. the inner part is fixed to   voice coil that sits just in front of a permanent magnet . when loudspeaker is hooked up to a stereo, electrical signals feed through the speaker cables into the coil. it will convert the coil into an electromagnet magnet . when electricity flows back and forth in the cables, the electromagnet either repels or attract the permanent magnet. this moves the coil back and forth, and it pull and push the loudspeaker cone. like a drum skin vibrating back and forth, the moving cone pumps sounds out into the air.in this way loudspeakers works.

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the definition of a small business is an independently owned and operated company that is limited in size and in revenue depending on the industry. a local bakery that employs 10 people is an example of a small business. a manufacturing facility that employees less than 500 people is an example of a small business.