Answer these questions before class on Monday, January 24th. Be sure to review these notes before answering.

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First Name: Last Name:

Laboratory Section:

1a. What unit are we discussing if the symbol is C?

b. What physical quantity are we discussing if the symbol is C?

 

2a. What value must we multiply the unit meters by to obtain nanometers? (Write the decimal value. If you want to write the value in scientific notation instead of writing 1.0 x 10-2 write 1.0e-2.)

b. What value must we multiply the unit grams by to obtain kilograms? (Write the decimal value. If you want to write the value in scientific notation instead of writing 1.0 x 10-2 write 1.0e-2.)

 

3. How many significant figures in each of the following numbers?

a) The number of significant figures in the number 0.0202 is .

b) The number of significant figures in the number 4.890 x 103 is .

c) The number of significant figures in the number 9.01050 is .

d) The number of significant figures in the number 37,400 is .

 

4. Round each of the following numbers to the indicated number of signficant figures.

a) Round 0.04909 to 3 significant figures.

b) Round 0.04909 to 2 significant figures.

c) Round 53.817 to 4 significant figures.

d) Round 53.817 to 1 significant figures.

 

5. Determine the result of the following calculation to the correct number of significant figures.

a) 4.86 x 1.0500

b) 0.0801 / 2.3

c) (2.15 x 0.7010) / 18

d) 10.456 + 1.010

e) 4.890 x 103 x 9.23 x 10-5