In the gold rush of 1849, prospectors found a yellow mineral that appeared to be gold, but was harder and more brittle than gold. What is this mineral that came to be called “fool’s gold”?

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Name three different units of energy used to measure heat and describe what type of situations each is usually used.