Yvette buys and sells real estate. two weeks ago, she paid $300,000 for a house on pine street, intending to spend $50,000 on repairs and then sell the house for $400,000. last week, the city government announced a plan to build a new landfill on pine street just down the street from the house yvette purchased. as a result of the city’s announced plan, yvette is weighing two alternatives: she can go ahead with the $50,000 in repairs and then sell the house for $290,000, or she can forgo the repairs and sell the house as it is for $250,000. she shoulda. keep the house and live in it.
b. go ahead with the $50,000 in repairs and sell the house for $290,000.
c. forgo the repairs and sell the house as it is for $250,000.
d. move the house from pine street to a more desirable location, regardless of the cost of doing so.

c. forget the repairs and sell the house as it is for $250,000.

Explanation:

The best option from the shown is to foget about the repairs and directly seel it at $250,000 because that leaves her with a loss of $50,000 instead of a $60,000 loss on her money, that is the best option financially. Also as the time passes the plan for the creation of the landfill downstreet will become more and more known and the value could decrease more.

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.