« previous next »

Author Question: What is the result, expressed to the proper number of significant figures, of adding 23.4 to 91.237 ... (Read 120 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?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Differences in the number and location of flagella. Differences in the number and location of flagella.
Ectopic pregnancies. (a) An ectopic pregnancy may occur in any of the locations shown. Interstitial Ectopic pregnancies. (a) An ectopic pregnancy may occur in any of the locations shown. Interstitial
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
Proper Motion of Barnard’s Star Proper Motion of Barnard’s Star
Dread Scott. What Is the Proper Way to Display a U.S. Flag? Dread Scott. What Is the Proper Way to Display a U.S. Flag?
Relationship between the number of amino acid substitutions Relationship between the number of amino acid substitutions
Video: Energy sources - types

For a complete list of videos, visit our video library