<u>Answer</u>:
Cell phones contain rechargeable batteries that transform chemical energy into electrical energy. When using your cell phone, electrical energy is first transformed into <u>Electromagnetic waves </u>that are transmitted through the air.
<u>Explanation</u>:
When chemical energy is converted into electrical energy in cell phones, then this electrical energy firstly transformed or converted into electromagnetic waves which travels through air. Then this electromagnetic wave is converted into sound energy due to which users are able to listen audio, music, movies etc on their mobile phones.
The electrochemical energy that stored in a cell is removed as electrical energy in the process of discharging. There are so many other thermal and electrochemical processes taking place at the same time.
Answer:
2.84*10^-3 years = 0.00284*10^-3 years
Explanation:
To find the orbital period you use the following formula:
r: 2.0A = 2.0(1.5*10^11m)=3*10^11 m
G: Cavendish constant = 6.67*10^-11 Nm^2/kg^2
M: mass of the sun = 1.98*10^30 kg
Next, you calculate the time in seconds of one Earth's year:
thus, you use this value to find the orbital period of the asteroid in Earth's year:
Paper currency or banknotes are pieces of paper that carry a payment promise for the currency written on them and which is payable to the bearer on demand. At the beginning, banknotes were issued by commercial banks that backed their value by holding reserves of gold and silver coins. Nowadays, its value is fiduciary, it is not backed by any physical good of the same value.
The development of paper currency by Song's dinasty meant a considerable improvement from merchants and traders at those times. Paper money was much easier to transport if compared to coins, both in terms of size and weight. Merchants could travel for a longer time carrying their profits with them on the way and became more efficient in their businesses.
No, Qatar is not doing the right thing in terms of public relations to publicize the soccer World Cup that it will organize in 2022.
This as it has not given a correct promotion of the event, nor has it sought to attract the public in relation to its additional attractions as a country, nor has it sought to connect with the eventual participating nations to carry out cultural exchanges, nor has it tried to attract other nations to the knowledge of their culture.
In short, Qatar, up to now, has limited itself to being a mere builder of sports facilities, without committing itself to properly promoting the event.
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