Trade deficits: capital deepening or consumption? suppose a country that had balanced trade began to run a trade deficit. at the same time, consumption as a share of gdp increased but the investment share did not. do you think there was an increase in capital deepening?

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Explanation:

A trade deficit occurs when a nation imports more than it exports. For instance, in 2018 the United States exported $2.500 trillion in goods and services while it imported $3.121 trillion, leaving a trade deficit of $621 billion. Services, such as tourism, intellectual property, and finance, make up roughly one-third of exports, while major goods exported include aircraft, medical equipment, refined petroleum, and agricultural commodities. Meanwhile, imports are dominated by capital goods, such as computers and telecom equipment; consumer goods, such as apparel, electronic devices, and automobiles; and crude oil. (The deficit in goods, at $891 billion, is higher than the overall deficit, since a portion of the goods deficit is offset by the surplus in services trade.)

The balance of imports and exports, or the trade balance, is part of the broader measure of the U.S. economy’s transactions with the rest of the world, known as the balance of payments. The economy’s balance of payments consists of the trade balance, or current account, and the financial accounts, or the measures of U.S. purchase and sales of foreign assets. The financial accounts include financial assets, such as stocks and bonds, as well as foreign direct investment (FDI). These accounts generally balance, since a current account deficit—the trade deficit—results in a corresponding financial account surplus as foreign capital and investment flows into the country.

The fundamental cause of a trade deficit is an imbalance between a country’s savings and investment rates. As Harvard’s Martin Feldstein explains, the reason for the deficit can be boiled down to the United States as a whole spending more money than it makes, which results in a current account deficit. That additional spending must, by definition, go toward foreign goods and services. Financing that spending happens in the form of either borrowing from foreign lenders (which adds to the U.S. national debt) or foreign investing in U.S. assets and businesses—the capital account.

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.

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