SHOW YOUR WORK on calculations. 1. Scientific Notation Express the following in

ID: 780602 • Letter: S

Question

SHOW YOUR WORK on calculations.

1. Scientific Notation

Express the following in scientific notation. DO NOT forget the units such a g or m/s yr etc where appropriate:

0.000851 g

My answer to this problem is .

2. Express the following in scientific notation. DO NOT forget the units such a g or m/s yr etc where appropriate:

299,790,000 m/s (Speed of Light)

My answer to this problem is .

3. Express the following in decimal notation: 4.54 X 109 yr (Age of the Earth)

My answer to this question is .

4. Express the following in decimal notation: 450 X 10-9 m (Wavelength of Blue LIght

My answer to this question is .

5. Please select all four of the Standard SI Units from the following choices:

A) Minute
B) Kilogram
C) Gram
D) Meter
E) Yard
F) Second
G) Centigrade
H) Kelvin
I) Pounds
J) Farenheight

6. A 1.5 cm3 sample of silicon has a mass of 3.5 g.

Calculate the density of silicon in g/cm3

A) 23 g/cm3
B) 2.3 g/cm3
C) 0.42 g/cm3
D) 4.2 g/cm3
E) 5.25 g/cm3

7. Unit Conversions

A runner runs at a pace of 8.5 minutes per mile. She wants to run 10.0 km.

For how long should she run in minutes?

A) 120 Minutes
B) 85 Minutes
C) 850 Minutes
D) 53 Minutes
E) 530 Minutes

1. 8.51*10^-4 g

2.2.9979*10^8 m/s

3)..4,540,000,000,000,000,000 yr

4). 0.00000045

5).Gram metre second kelvin

6).B

7).we have miles= 10/1.61

so required time= 6.2*8.5

= 53 min

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