« previous next »

Author Question: What is the result, expressed to the proper number of significant figures, of adding 23.4 to 91.237 ... (Read 128 times)

cabate

  • Hero Member
  • *****
  • Posts: 537
on: Jul 29, 2018
What is the result, expressed to the proper number of significant figures, of adding 23.4 to 91.237 and then subtracting 23.4?
 
  A) 91.237
  B) 91.2
  C) 91.3
  D) 91.0
  E) 91

Question 2

A scuba diver is 1.2 m beneath the surface of a still pond of water.
 
  At what angle relative to the normal at the surface must the diver shine a beam of light toward the surface in order for a person on a distant bank to be able to see it? The index of refraction for water is 1.33. A) 41
  B) 48
  C) 59
  D) 90
  E) 0
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


akemokai

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Norman Bel Geddes, with Dr. Otto Koller, Air Liner Number 4. Norman Bel Geddes, with Dr. Otto Koller, Air Liner Number 4.
Lattice Parameter Relationships and Figures Showing Unit Cell Geometries for the Seven Crystal Syste Lattice Parameter Relationships and Figures Showing Unit Cell Geometries for the Seven Crystal Syste
Number of Chromosomes in Selected Organisms Number of Chromosomes in Selected Organisms
What will the pH be upon adding .01 moles of HI? What will the pH be upon adding .01 moles of HI?
The charge for telephone calls T is partly constant and partly varies with the number N of ... The charge for telephone calls T is partly constant and partly varies with the number N of ...
Comparison number Grade 1 math Comparison number Grade 1 math
Video: Atrophy

For a complete list of videos, visit our video library