S302, Kewley-Port 8/26/07

Homework 1

Calculator Skills

Do the following problems on your scientific calculator by Wednesday, 8/29. If you need help with any problem on your calculator, see Megan or DKP. There is nothing to turn in here for this part of the homework.

  1. sqrt (165) = 12.84
  2. log (3000) = 3.477
  3. (130 - (39*2))/(.346*1.29) = 116.50
  4. 2 * = 6.28
  5. 10 ^3 * 10 ^-2 = 10 (NOTE: "^" character indicates the next character is an exponant).

6. Log into Oncourse:   https://oncourse.iu.edu. Select S302 course. Allow yourself to be 'visible' so you can use Oncourse. Locate the tabs for the Syllabus and the Schedule and check out the contents. Using the tab "Messages", send just Megan Haviland (AI) an Oncourse email message that tells here whether you found the calculator skills questions easy, a little challenging or hard.

Written Answers

Note: All written homeworks are due at the beginning of class Monday, unless otherwise instructed.

7. There are 1000 m in one kilometer (km).  How many kilometers is 1250 m?

8. On p. 5 we learned that a volume of one cubic inch of air has 4 X 1020 air molecules. (a) Explain or write a formula to calculate volume. (b) Is volume is fundamental or derived quantity? __________________

9. There are 1000 milliseconds (msec) in one second (sec).  How many msec are there in one minute?

10. The rapid train in France traveled 70 km in 20 min. What is it's speed?  ____________ (make sure the speed is in reasonable for high speed trains)

11. Your car dies on the road. You get out and try to push it over to the side of the road. Explain briefly how Newton's first law applies to your efforts to push the car.

12. Consider the reading "From Basic Research...." by William Katz. Speech perception asks what acoustic "cues" listeners attend to in order to identify speech sounds. From the article, one cue for decoding vowels is is "fundamental frequency". Write a brief definition of fundamental frequency.