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문제 7a
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
a. The clotting time for a blood sample is 15 s.
문제 7b
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
b. A premature baby weighs 1.9 kg.
문제 7c
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
c. An antacid tablet contains 1.0 g of calcium carbonate.
문제 7d
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
d. An infant has a temperature of 39.2 °C.
문제 9a
Use the metric ruler to measure the length in each of the following, and write the measurement, the estimated digit, and the number of significant figures:
a. <IMAGE>
문제 13
In which of the following pairs do both numbers contain the same number of significant figures?
a. 11.0 m and 11.00 m
b. 0.0250 m and 0.205 m
c. 0.000 12 s and 12 000 s
d. 250.0 L and 2.5 × 10-2 L
문제 14
In which of the following pairs do both numbers contain the same number of significant figures?
a. 0.005 75 g and 5.75 × 10-3 g
b. 405 K and 405.0 K
c. 150 000 s and 1.50 × 104 s
d. 3.8 × 10-2 L and 3.0 × 105 L
문제 16
Indicate if the zeros are significant in each of the following measurements:
a. 20.05 °C
b. 5.00 m
c. 0.000 02 g
d. 120 000 yr
e. 8.05 × 102 L
문제 17c
Write each of the following in scientific notation with two significant figures:
c. 100 000 m
문제 17d
Write each of the following in scientific notation with two significant figures:
d. 0.000 25 cm
문제 19a
Identify the numbers in each of the following statements as measured or exact:
a. Sandra has a patient with a mass of 67.5 kg.
문제 19b
Identify the numbers in each of the following statements as measured or exact:
b. A patient is given 2 tablets of medication.
문제 21a
Identify the measured number(s), if any, in each of the following pairs of numbers:
a. 3 hamburgers and 6 oz of hamburger
문제 21b
Identify the measured number(s), if any, in each of the following pairs of numbers:
b. 1 table and 4 chairs
문제 22a
Identify the exact number(s), if any, in each of the following pairs of numbers:
a. 5 pizzas and 50.0 g of cheese
문제 22b
Identify the exact number(s), if any, in each of the following pairs of numbers:
b. 6 nickels and 16 g of nickel
문제 29a
Perform each of the following calculations, and give an answer with the correct number of significant figures:
a. 45.7 × 0.034
문제 29b
Perform each of the following calculations, and give an answer with the correct number of significant figures:
b. 0.00278 × 5
문제 33a
Write the abbreviation for each of the following units:
a. milligram
문제 33b
Write the abbreviation for each of the following units:
b. deciliter
문제 33c
Write the abbreviation for each of the following units:
c. kilometer
문제 35a
Write the complete name for each of the following units:
b. kg
문제 35b
Write the complete name for each of the following units:
a. cL
문제 35c
Write the complete name for each of the following units:
c. ms
문제 37a
Write the numerical value for each of the following prefixes:
a. centi
문제 37b
Write the numerical value for each of the following prefixes:
b. tera
문제 37c
Write the numerical value for each of the following prefixes:
c. milli
문제 40b
Use a prefix to write the name for each of the following:
b. 106 m
문제 40c
Use a prefix to write the name for each of the following:
c. 0.001 m
문제 40d
Use a prefix to write the name for each of the following:
d. 10-12 m