Download presentation

Presentation is loading. Please wait.

Published byCasandra Longshore Modified over 2 years ago

1
Math Review Friday, September 10, 2010

2
Register clickers Online homework and exam Science math review Before next time

3
Can you correctly answer A to this question? A) Yes B) No http://kookaburra.com.au

4
Online Math Exam – Due Sunday at 11:59 pm Online Homework for next week – Due Tuesday at 11:59 pm Practice problems…

5
Read Ch. 1 in your text Significant Digits Scientific Notation Unit Analysis Vectors

6
Digits that actually have meaning! ◦ All digits in a number except for trailing or leading zeros ◦ All digits that relate to the precision of the number Examples ◦ 1.001(4 sig figs) ◦ 234(3 sig figs) ◦ 900(1 sig fig) ◦ 0.005(1 sig fig) ◦ 3.4(2 sig figs) ◦ 45.6(3 sig figs) ◦ 10(1 sig fig) ◦ To write 900 and 10 with more sig figs need Sci. Not.

7
A way of representing a number so that you can clearly see the significant digits and the order of magnitude ◦ 110 would be 1.1E2 or 1.1x10 2 Examples ◦ 1.001(1.001E0) ◦ 234(2.34E2) ◦ 900(9.00E2 or 9.0E2 or 9E2) ◦ 0.005(5E-3) ◦ 3.4(3.4E0) ◦ 45.6(4.56E1) ◦ 10(1.0E1 or 1E1)

8
Accuracy = How close measurements are to the target Precision = Spread in measurements Accurate, not precisePrecise, not accurate

9
Prefixes Conversion ◦ 1 mm = ___?___ m ◦ 0.001 m ◦ 1 inch = ___?___ cm ◦ 2.54 cm Solving Problems ◦ Make sure answer has the correct units

10
Ways to write Vectors ◦ 3 mph to the right or 3 mph to the east ◦ 5 mph at 45 degrees from x axis ◦ (3,2) or Magnitude, Direction, Components

11
Adding Vectors ◦ Break into components and add the components Subtracting Vectors – Add the negative vector

12
Do the Online Math Exam ◦ Get the Connect Access card ◦ Enter the course ID – in syllabus materials Read Ch. 1 and Ch. 2 ◦ Ch. 1 won’t have any additional homework… ◦ Ch. 2 online homework will be due Tuesday at 11:59 pm Get course materials and make sure to register!

Similar presentations

OK

Accuracy: The closeness of a measurement to the true or actual value

Accuracy: The closeness of a measurement to the true or actual value

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on art of war 2 Ppt on eia report environmental impacts Upload and view ppt online viewer Ppt on earth movements and major landforms in brazil Ppt on power transmission system in automobile Ppt on etiquettes meaning Ppt on indian textile industries in uganda Ppt on as 14 amalgamation definition Ppt on javascript events Water cycle for kids ppt on batteries