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During a recent blizzard Jack made two snowballs, one of which had twice as large a diameter than the other. As usual the weather warmed up and the snowballs began to melt. The melting only took place at the surface of the snowballs, so the speed at which they melted was proportional to the remaining surface.

How much was left of the small snowball when half of the volume of the large snowball had melted?

A) Approximately 20.27%

B) Approximately 30.42%

C) Approximately 50%

D) Approximately 10.75%

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[Jul 25 2014]

Xcel Energy, other corporate donors invest in Colorado School of Mines Multicultural Engineering Program GOLDEN, CO, July 25, 2014—Twenty-eight incoming Colorado School of Mines freshmen participated in the 2014 Challenge Program, a four-week summer session that ...more

[Jul 23 2014]

From petroleum engineering to public health It was a first for Mines when Linda Battalora, associate teaching professor in the Department of Petroleum Engineering, presented her research on bone density ...more

[Jul 23 2014]

NSF grant funds Mines bio-hybrid materials research for solar energy capture, conversion and storage GOLDEN, Colo., July 23, 2014 – Colorado School of Mines researchers have been awarded a $420,000 grant from the Biomaterials Program in the Division of Materials ...more

[Jul 22 2014]

Mines researchers "Turning Food Waste to Glass" story featured on cover of American Ceramics Society bulletin ...more

[Jul 21 2014]

Mines professors discover new type of fuel cell that could more efficiently power your house ...more

[Jul 18 2014]

Mines makes it big in Business Insider's "The 10 Best Universities For Robotics In The US" ...more

Mines professors discover new type of fuel cell that could more efficiently power your house

“Imagine you could replace the water heater in your home with a similarly-sized fuel cell unit that could also produce the electricity for your home,” metallurgical and materials professor Ryan O’Hayre said. “You wouldn't need the electric grid anymore. This would be great for remote cabins, but also for people that want to "get off the grid.” READ MORE...

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Last Updated: 07/24/2014 10:10:15

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