Whispering Winds Corp. Income Statement For the Year Ended December 31, 2017 Sales revenue Cost of goods sold Operating expenses Interest expense Loss on disposal of equipment Income before income taxes Income tax expense Net income $941,820 $472,100 229,800 11,970 2,020 715,890 225,930 64,830 $161,100 Additional information: 1. Operating expenses include depreciation expense of $40,160 2. Land was sold at its book value for cash. 3. Cash dividends of $85,680 were declared and paid in 2017 4. Equipment with a cost of $164,450 was purchased for cash. Equipment with a cost of $50,790 and a book value of $35,670 was sold for $33,650 cash. 5. Bonds of $49,810 were redeemed at their face value for cash. 6. Common stock ($1 par) of $171,150 was issued for cash.

              Statement of Cash Flows (Indirect Method) 2017

Cash flow from operating activities:

net income                                             $161,100

Adjustments to reconcile net income:

+ depreciation expense                         $40,160

+ loss on sale of equipment                   $2,020

Change in current assets:

- increase in accounts receivable      ($40,050)

- increase in inventory                         ($44,310)

+ increase in prepaid expenses             $1,980

Change in current liabilities:

+ increase in accounts payable             $2,580

- decrease in accrued exp. payable   ($10,070)

Net cash provided by operating activities $113,410

Cash flow from investing activities:

purchase of new equipment              ($164,450)

sale of old equipment                           $33,650

Net cash provided by investing activities ($130,800)

Cash flow from financing activities:

Proceeds from issue of new stocks     $171,150

- redemption of bonds                         ($49,180)

- dividends paid                                   ($85,680)

Net cash provided by financing activities $36,290

                          Net increase in cash $18,900

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.