« previous next »

Author Question: What is the result, expressed to the proper number of significant figures, of adding 23.4 to 91.237 ... (Read 146 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?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

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?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Giardiasis. Colorized electron micrograph of a Giardia protozoan adhering to the surface of an epith Giardiasis. Colorized electron micrograph of a Giardia protozoan adhering to the surface of an epith
The first step is to verify the proper operation of the tester by measuring the air frequency by ... The first step is to verify the proper operation of the tester by measuring the air frequency by ...
How to count for the correct number of significant digits How to count for the correct number of significant digits
A deficiency of linoleic acid can interfere with normal growth and result in inflammation A deficiency of linoleic acid can interfere with normal growth and result in inflammation
Adding a Poll on Biology Forums Adding a Poll on Biology Forums
Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on
Video: Definition of heart rate

For a complete list of videos, visit our video library