Question

Q.1) Two identical rods of copper are heated to different temperatures, one by 50c and the other by 10 0c. Which rod will expand more? pls explain Q.2) One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which one will expand more? give reasons

Answer 1

Answer:

The South Pole has shown the same, relentless upward trend in carbon dioxide (CO2) as the rest of world, but its remote location means it’s the last to register the impacts of increasing emissions from fossil fuel consumption, the primary driver of greenhouse gas pollution.

“The far southern hemisphere was the last place on earth where CO2 had not yet reached this mark,” said Pieter Tans, the lead scientist of NOAA's Global Greenhouse Gas Reference Network. “Global CO2 levels will not return to values below 400 ppm in our lifetimes, and almost certainly for much longer.”

Over the course of the year, CO2 levels rise during fall and winter and decline during the Northern Hemisphere’s summer as terrestrial plants consume CO2 during photosynthesis. But plants capture only a fraction of annual CO2 emissions, so for every year since observations began in 1958, there has been more CO2 in the atmosphere than the year before.

Last year’s global CO2 average reached 399 ppm, meaning that the global average in 2016 will almost certainly surpass 400 ppm. The only question is whether the lowest month for 2016 will also remain above 400.

Explanation:

hope it helps

Answer 2

Answer:

ok

Explanation:

pls mark brainliest