Mantle Publications publishes a golf magazine for beginners interested in learning and playing golf. The magazine sells for $4.00 a copy on the newsstand. Yearly subscriptions to the magazine cost $36 per year (12 issues). During December 2016, Mantle Publications sells 4,000 copies of the golf magazine at newsstands and receives payment for 6,000 subscriptions for 2017. Financial statements are prepared monthly. Required: (a) Prepare the December 2016 journal entries to record the newsstand sales and subscriptions received. (b) Prepare the necessary adjusting entry on January 31, 2017. The January 2017 issue has been mailed to subscribers.

December:

Dr cash         $16,000

Cr subscription revenue   $16,000

Dr cash                         $216,000

Cr unearned revenue                     $216,000

January 2017:

Dr unearned revenue $18,000

Cr subscription revenue            $18,000

Explanation:

The sales of 4000 copies at the newstand means that revenue of $16,000($4*4000) has been earned in December,which means that cash would debited with $16,000 and sales revenue credited with the same amount.

In December,the subscriptions received in advance for 2017 of $216,000($36*6000) would be debited to cash and credited to unearned revenue account.

At the end of January,the unearned revenue would be debited with $18,000($216,000/12) in respect of subscription earned as a result of the Magazine been mailed to subscribers in the month,which now entitles the company to one month subscription as earned sales revenue.

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; swot analysis;