Recent content by rwh

I have a question that is probably pretty basic. On a test my teacher gave he asked the following question: Why does the force of gravity do no work on a bowling ball rolling along a bowling alley? I answered: I disagree with this statement. The bowling ball has mass so gravity is...

Thank you!

The equatorial radius of the Earth is about 6370km. Consider a 40,000 km long steel pipe that forms a giant ring that fits snugly around the equator of the earth. Suppose the temp. of the pipe is increases 1 degree C. The pipe gets longer. it is also no longer snug. How high does the pipe stand...

On some pictures of nuclear explosions there are lines that usually run straight up from the ground. One of the coolest pictures I've seen had these trails originating from each side of the explosion and crossing each other behind the mushroom cloud. So what are these things? How long do they...

Hey thanks. So if the temp of the tea is warmer than the temp of the ocean when it goes into the ocean the answer is true.

True or False: When Queen Elizabeth throws the last sip of tea over Queen Mary's rail the ocean gets a little warmer? I want to say it is false because of how large the ocean is, but he heat of the tea has to go somewhere right? Which makes me want to say true. :confused: