1. discussion although many argue that the gig economy has opened up opportunities for individuals to be self-employed in ways that complement their lifestyle, the investments that gig giant uber is making suggest a different kind of future for the uber successful taxi substitute . 1. what do think uber has in mind?

2. discussion 1. what are some of th potential applications for fleets of self driving vehicles? 2. what role might this kind of infrastructure play in towns and cities in the future ? 3. how might uber leverage these kinds of assets to generate a profit ? 4. do you see a way for uber to be successful while still employing human drivers ? 5. how?

3. problem solving you've been hired on by uber's ceo travis kalanick as the chief financial officer and asked to address the issue of huge quarterly losses , despite massive sales revenues . the uber fleet is not likely to be "self -driving " for at least another 5 years , and it isn't clear whether the current model will be sustainable until then , particularly given increasing competitive pressures to raise drivers ' rates from companies such as lyft . 1. what steps could you take to address these competing pressures -market pressures to raise rates and the need to generate profits?

4.further research look into some of the more well-known gig companies currently making headlines in the financial press. 1. are any of these companies generating a profit? 2. what factors are at work here? 3. how have these profitable companies organized to become profitable? 4. are any of these companies moving toward models that remove the "human factor^ prime prime -that mechanize in the way that it looks like uber could be seeking to mechanize ? 5. how are the financial values of some of these gig companies being determined? 6. in light of the huge losses experienced by some gig economies, what factors are likely playing a role in these financial evaluations ? 7. are people speculating on an unknown future?
5.strength of conclusion

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.