Physics:      Wed    SEP 1:

 

Key Concept(s) Today: Vision & Admin stuff

 

1st Day Administration:

  • Vision Overall objectives
  • Rules
  • Course Syllabus /Expectations Sheet
  • Myself (show site)

 

 

E.C. Assignment

1.  If you pay the course fee by Friday (10th), you will earn 10 EC points (i.e., 20 out of 10).

 

 

 

                       

Notes:

Day 1  

 

  • Return Course Expectations form signed by parent (due Friday 4th)

 

 

2.   Standard Units:

What are the standard units for ____ and how did we determine them?

 

·       Mass

·       Time

·       Length

 

 

Physics Math Review

 

 Using powers of ten to describe very big and very small numbers.

 

 

Remember this stuff.

10,000 = 104

1,000 = 103

100 = 102

10 = 101

1 = 100

0.1 = 10-1

0.01 = 10-2

0.001 = 10-3

0.0001 = 10-4

 

 

30,000 = 3x 10,000 = 3x104

30,000 = 30x 1000 = 30x103

30,000 = 30,000 x 1 = 30,000x100

30,000 = 3,000,000x 0.01 = 3,000,000x10-2

 

All of the above are correct.

They all describe 30,000

 

 

 

 

 

 

 

 

 

 

 

 

 

Which is correct…..?

 

1.         300 is   a) 3 x 101            b) 3 x 102         c) 3 x 103         d) 3 x 104          

2.         420 is   a) 4.2 x 101        b) 4.2 x 102      c) 4.2 x 103      d) 4.2 x 104       

3.         0.34 is a) 3.4 x 10-1       b) 3.4 x 10-2     c) 3.4 x 10-3     d) 3.4 x 10-4      

4.         0.00034 is                    a) 3.4 x 10-1       b) 3.4 x 10-2     c) 3.4 x 10-3     d) 3.4 x 10-4      

5.         0.000000000034 is      a) 3.4  x 10-10    b) 3.4 x 10-11    c) 3.4 x 10-12    d) 3.4 x 10-13     

6.         49000000000000000000000000 is     a) 4.9 x 1021      b) 4.9 x 1024     c) 4.9 x 1025

 

 

 

Adding Exponents

 

(4 x 103) +  (5 x 102) = 4000 + 500 = 4500

(4.3 x 104) +  (4.3 x 10-2) = 43000 + 0.043 = 43000.043

(5.3 x 103) -  (2 x 102) =

(6.72 x 102) +  (4.3 x 10-1) =

 

Multiplying/Dividing Exponents

 

(4 x 103) x  (5 x 102) = Coef: 4 x 5 = 20;   Exp 2 + 3  = 105   à  20 x  105    or 2 x 106  

(4.3 x 104) x (4.3 x 10-2) = Coef: 4.3 x 4.3 = 18.5;   Exp 4 -2 = 102   à  18.5 x  102    or 1.8 x 103  

 

(6 x 105) /  (2 x 102) = Coef: 6 / 2 = 3;   Exp 5 + (-2)  = 103   à  3 x  103     

(8 x 105) /  (-4 x 10-2) = Coef: 8 / -4 = -2;   Exp 5 - (-2)  = 107   à  -2 x   107  

 

 

 

Rest of W/S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answers:

                1.  B

                2.  B

                3.  A

4.  D

5.  B

6.  C

7. 6 x 1011

  1. 1.5 x 105
  2. -1.5 x 10-11
  3.  -6 x 1011
  4.  -6 x 105
  5.  -1.5 x 1011
  6.  6 x 10-11 
  7.  1.5 x 10-5 

15.

a.400                        b. 1400                     c. 400                                   d. 1200

e. 600                       f. 800                       g. 1000                     h. 1200

i. 600                        j. 800                        k. 1000                     l.  1200

m. 1000                    n. 800                       O. 300                      P. 600

Q. 300                      R. 300                      S.  1500                    T. 1500

u. 900