1. Your new company is planning to make and sell customized mailboxes. You have set startup costs of $2046. Each mailbox costs you $34 to make. If you plan to sell your mailboxes for $49.50, how many must you make and sell to break even? Explain the how you determined the answer. 2. If the retail price is fixed at $1.00, what effect does increasing the retail and wholesale margins have on the manufacturer's selling price? Explain why this is the case.

3. Define unit contribution in your own words. Is a high or low unit contribution preferable for profitability?

4. How do increases in the retail and wholesale margins (again, with a fixed retail price) affect the unit contribution? Why?

5. If you increase any of the fixed cost factors, what happens to the number of units the company needs to sell to break even? To the market share necessary to achieve breakeven?.

6. What change (increase or decrease) to the following factors increases the profit impact?

Decreasing retail margin/unit increases profit impact.

Increasing brand market share increases profit impact.

Decreasing advertising budget increases profit impact.

7. Many marketing decisions have multiple consequences. For example, while increasing price improves profit per unit, too large a price increase may decrease unit sales, ultimately decreasing profits overall. Keeping this kind of tradeoff in mind, explain how changes to the three factors mentioned in the prior question could potentially conflict with one another in terms of strategy for increasing the profit impact.

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.

answer; closing the loop;