The unadjusted trial balance as of December 31, 2021, for the Bagley Consulting Company appears below. December 31 is the company’s reporting year-end. Account Title Debits Credits Cash 12,500 Accounts receivable 9,750 Prepaid insurance 3,900 Land 250,000 Buildings 77,500 Accumulated depreciation—buildings 31,000 Office equipment 114,000 Accumulated depreciation—office equipment 45,600 Accounts payable 31,300 Salaries payable 0 Deferred rent revenue 0 Common stock 290,000 Retained earnings 50,100 Service revenue 92,500 Interest revenue 5,600 Rent revenue 7,200 Salaries expense 40,000 Depreciation expense 0 Insurance expense 0 Utilities expense 24,700 Maintenance expense 20,950 Totals 553,300 553,300
Information necessary to prepare the year-end adjusting entries appears below.
The buildings have an estimated useful life of 50 years with no salvage value. The company uses the straight-line depreciation method.
The office equipment is depreciated at 10 percent of the original cost per year.
Prepaid insurance expired during the year, $1,250.
Accrued salaries at year-end, $950.
Deferred rent revenue at year-end should be $500.
Required:
1. From the trial balance and information given, prepare to adjust entries.
2. Post the beginning balances and adjusting entries into the appropriate T-accounts.
3. Prepare an adjusted trial balance.
4. Prepare closing entries.
5. Prepare a post-closing trial balance.

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: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.