Indicate to what decimal position readings should be estimated and recorded (nearest 0.1 , 0.01 , etc .) for measurements made with the following devices: a. A ruler with a smallest scale marking of 0.1 cm b. A measuring telescope with a smallest scale marking of 0.1 mm c. A protractor with a smallest scale marking of 1 ° d. A tire pressure gauge with a smallest scale marking of 1 lb / in 2.
Indicate to what decimal position readings should be estimated and recorded (nearest 0.1 , 0.01 , etc .) for measurements made with the following devices: a. A ruler with a smallest scale marking of 0.1 cm b. A measuring telescope with a smallest scale marking of 0.1 mm c. A protractor with a smallest scale marking of 1 ° d. A tire pressure gauge with a smallest scale marking of 1 lb / in 2.
Solution Summary: The author explains that significant figures are used to express a measurement in scientific notation.
Indicate to what decimal position readings should be estimated and recorded (nearest
0.1
,
0.01
,
etc
.) for measurements made with the following devices:
a. A ruler with a smallest scale marking of
0.1
cm
b. A measuring telescope with a smallest scale marking of
0.1
mm
c. A protractor with a smallest scale marking of
1
°
d. A tire pressure gauge with a smallest scale marking of
1
lb
/
in
2.
A. The Internal System of Units
Fill in the space provided with the correct SI units and symbol for each quantity.
Quantity
Unit
Symbol
Length
Mass
Time
Electric current
Temperature
Amount of substance
Luminous intensity
B. The Metric System
Convert the following figures to its desired units. Do not round off your answers.
1. 23 m to
2. 76 L to
3. 93.2 mg to
4. 83.34 dL to
5. 94.1 Dm to
6. 12 cm to
7. 164,000 ml to
8. 454 g to
9. 1,232 kg to
10. 672 L to
km
DL
Hg
mm
mg
m
kL
Calculate the areas and densities. Report the answers in the correct units.a. the area of a rectangle with sides measuring 3 × 1 0 1 cm and 3 × 1 0 -2 cmb. the area of a rectangle with sides measuring 1 × 1 0 3 cm and 5 × 1 0 -1 cmc. the density of a substance having a mass of 9 × 1 0 5 g and a volume of 3 × 1 0 -1 c m 3d. the density of a substance having a mass of 4 × 1 0 -3 g and a volume of 2 × 1 0 -2 c m 3
For each of the following pairs of measurements, indicate which is the lesser (a or b). If two quantities are equal, write EQUAL. show your reasoning for points.
A. a) 71% or b)0.77
B. a)2600nm or b)2.5μm
C. a) 1.00 x 10^4 min or b) 1 week
D. a) 2.000L or b)2000cm^3
E. a) 1.10Tb or b) 1000Gb
F) a)10.0ft or b) 3.00m
Chapter 1 Solutions
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