- You land on a planet of unknown circumference. At noon a wall that is 1000km from the equator casts a shadow of 10o. What is the circumference of the planet? Show the equation you used to get your answer. (Should take you about 10 minutes)
- The following image is data from a drill site. How deep is the basalt layer? To make the math a little easier, use 4 seconds as travel time of sonar. (Should take about 5 minutes)
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