In this demonstration, a solar panel feeds power to a battery, which then feeds it to a laptop.

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Apart from that, three physical buttons on its top handle power, switching feeds and favoriting photos.

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The facility would spew out up to 11.5m tonnes of carbon dioxide a year as it feeds the power needs of the booming south-west, primarily around Phoenix and Las Vegas.

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It prioritizes power delivery to the rear wheels and feeds up to 50 percent to the front wheels only when needed.

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Shut the cover, and it continues to operate in a low power state, receiving emails, alerts and news feeds.

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In 2009, the company generated 29% of its revenue from selling steam coal to power plants, and 10% from sales of coking and pulverized coal that feeds the blast furnaces at steel mills and other metallurgical operations.

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Electricity has been restored to the Bath transmitter which feeds television and radio broadcasts to 80, 000 homes after a fire caused a power cut.

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