How to answer numeric questions.

• Type your answer into the box. Examples:
  • 3.14159
  • 2.7182
  • -123.45
  • 1.23e13 (1.23 times ten to the thirteen)
  • 1.23e-13 (1.23 times ten to the negative thirteen)
• Do not include units.
• Accuracy and "significant figures":
  • Do not use "significant figures" round-off algorithms.
  • Unless otherwise noted in the question, there is a plus-or-minus 1% grading allowance -- for example, if the correct answer is 100, you may answer anything between 99 and 101.