This is a little puzzler project in which you do some scientific calculations. You are allowed only these facts. Remember in the metric system, centi- means 1/100, milli- means 1/1000 and kilo- means 1000. Use Python's interactive mode to make this happen.

• 1 in = 2.54 cm (length)
• 1 liter = 33.8 fluid ounces (volume) = 1000 cm³
• 1 mile = 5280 ft (length)
• 1 foot = 12 in (length)
• 1 hour = 60 min (time)
• 1 min = 60 sec (time)
• 1 yr = 365.2425 days (time)
• 1kg=2.204lbs
• 1hr=60min,1min=60s,1day=24hr(time)
• 1 ton=2000lbs
• 1 acre = 1/640 mi²

Now use these facts to answer these questions.

1. Given that light travels at 2.9979e8 (that's 2.9979*10⁸) in scientific notation) meters per second, figure out how fast light moves in miles per second. Then convert this to miles per hour.
2. Tell the time it take for light to go from the sun to the earth if the mean distance of the sun to the earth is 93.0 million miles.
3. Use the fact that a liter of water weighs one kilogram and that one gallon of water weighs 8.33 lbs to determine the number of cubic inches in a gallon and the number of pounds in a cubic foot of water.
4. Let us assume that humans weigh an average of 140 lbs and that humans have about the same density as water. If the population of the earth is 7.0 billion humans, estimate the total volume of humanity in cubic miles. Do you find this counterintuitive?
5. An acre-foot of water is enough water to cover one acre one foot deep. How many gallons of water are in an acre-foot? What does that water weigh in tons?

The Product Download the two files, lab1.html and lab1.css. Show and explain your calculations in the document lab1.html. Your explanations need to pass the "man on the moon test;" this means that that a reasonably intelligent man on the moon can read and understand what you did without any explanation other than the contents of your document. It is the same standard you use in scientific lab report. Even if you have never used HTML before, it's pretty easy to figure out how to create the document. Keep the two files in the same folder. To view the formatted version, open lab1.html with your browser.