Airplane Sig

Posted on | December 18, 2008 | 1 Comment

Airplane Sig

Significant Figures answered in Scientific Notation?

How do you know when an answer with sig figs is supposed to be in scientific notation or not?

I was attempting to do one problem on my physics homework and it gives the answers for the first part in scientific notation, and the answer for the second part in a whole number. I'm tired of asking my teacher because she basically seems to think I'm a lost cause anyways, but I'm trying to understand.

The problem is:

"An airplane flies with a velocity of 214mph at a heading of 65.0(degrees), including the effects of the wind. The pilot stays on that course for 2.10 hours and then turns his plane so that it flies with a velocity of 187mph at a heading of 335(degrees), including the effects of the wind. If the airplane flies on that course for an additional 1.40hours, what is the plane's final displacement?

for Ax = 449cos(65.0) the answer is 1.90 x 10^2 miles
for ay = 449sin(65.0) the answer is 407miles.

Why????

Each of the factors given in the problem has three significant figures (three digits of precision) so the answer can have 3 significant figures as well.

If the first answer, 190 miles, were stated without scientific notation, it would be unclear to the reader whether the answer had three signficant figures (190 exactly) or only two significant figures (answer between 185 and 194 rounded to 190). Using scientific notation resolves this, since it's clear from the inclusion of the 0 in "1.90" that there are three significant figures (1 9 and 0).

For the second answer, it's clear looking at the number 407 that there are three significant figures, so scientific notation is not needed.

RC Airplane Sig Somethin Extra Rabbit Dry Lake

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No. Ferrets are small domestic animals related to weasels, skunks and otters. They are not rats or rodents. In taxonomy, they are in between cats and dogs, but leaning more towards dogs. 1

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Yes. Hiccups are common to them especially to the baby ferrets. Give them a drink of water or a small treat. These would be able to help your pet in stopping the hiccups. 6

Question 7: How much do they cost?

Prices vary in different places and it also depends on where you’re purchasing one. Stores and breeders price them from US$ 75-250, usually it’s around $100. Don’t forget to also include within your budget your cage and supplies (at around $100-$250) plus initial vaccinations ($75). Keep in mind that other costs may include food, treats, remedies, annual checkups and vaccinations. Have an emergency stash, too, for vet visits and other medical emergencies.  7

Question 8: Is it okay to bring my ferret along when going outside?

With the right accessories, why not? Ferrets love to travel. When it’s just around the town, a shoulder bag with a litter pan, water bottle and food dish will suffice. Just check if the establishment you’ll be entering welcomes pets to avoid embarrassment. 8

Question 9: Can I bring them when I’m traveling in a car or an airplane?

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SOURCES:

1              http://ferret-facts.com/faq.php

2             http://www.petplace.com/small-mammals/what-you-should-know-about-breeding-your-ferret/page1.aspx

3              http://www.rud.dk/ferrets/faqhtml/part1.html#kids

4              http://www.ferretnews.com/articles/most-common-ferret-questions-ferret-faq.html

5              http://books.google.com.ph/books?id=LQ2zeR5TI4YC&pg=PA99&lpg=PA99&dq=ferret+toys&source=bl&ots=fVf7uidnaL&sig=Atg84IZltRRCMpsKIkq1x6bsQA0&hl=en&ei=_J4JSs68ApzI6wPi_62vCQ&sa=X&oi=book_result&ct=result&resnum=4#PPA101,M1

6,8          http://www.ferretcentral.org/faq/wholefaq.html#shedding

7              http://www.rud.dk/ferrets/faqhtml/part1.html#cost

9              http://www.weaselwords.com/page/ferret_art027.php

10          http://en.allexperts.com/q/Ferrets-2277/Determining-Ferret-Gender-BOY.htm

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Article Source: ArticlesBase.com - Ferret FAQ – 10 Questions and Answers that Every Ferret Owner Would Like To Know

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