This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: There are other ways of expressing uncertainty besides significant figures. For example, suppose a ... (Read 27 times)

AEWBW

  • Hero Member
  • *****
  • Posts: 579
on: Jul 28, 2018
There are other ways of expressing uncertainty besides significant figures. For example, suppose a quantity is known to have a value between 20.4 and 20.0, and our best estimate of the value is midrange at 20.2 . We could write the number as 20.2 +/ 0.2 and say that the number has a 1 uncertainty. We would also say it has 3 significant figures. If we square a number with 1 uncertainty (i.e., 2 parts in about 200) and 3 significant figures, what results?
 a. A number with 1 uncertainty and 3 significant figures.
  b. A number with 2 uncertainty and 3 significant figures.
  c. A number with 2 uncertainty and 2 significant figures.
  d. A number with 1 uncertainty and 2 significant figures.

Question 2

Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 25 and 53 cm, how many significant figures will result if you only use the part of the meter stick between the 3-cm and 85-cm positions?
 a. 1
  b. 2
  c. 3
  d. 4
  e. more than 4


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ricroger

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

d


AEWBW

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jul 28, 2018
TY


ricroger

  • Sr. Member
  • ****
  • Posts: 352
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
Three ways that factors affect mortality in response to changes in population density. Three ways that factors affect mortality in response to changes in population density.
Emerging adults often feel adult in some ways but not others. Emerging adults often feel adult in some ways but not others.
United States, southwestern and southern states are suffer from a significant decrease in rainfall United States, southwestern and southern states are suffer from a significant decrease in rainfall
Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ... Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ...
Expressing amounts of energy in different energy units is necessary to solve man Expressing amounts of energy in different energy units is necessary to solve man
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library