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

Author Question: Suppose that the speed of an electron traveling 2000 m/s is known to an accuracy of 1 part in 105 ... (Read 87 times)

Anajune7

  • Hero Member
  • *****
  • Posts: 574
on: Jul 29, 2018
Suppose that the speed of an electron traveling 2000 m/s is known to an accuracy of 1 part in 105 (i.e., within 0.001). What is the greatest possible accuracy within which we can determine the position of this electron?
 
  A)
 
  2.9 mm
  B)
 
  5.8 mm
  C)
 
  8.7 mm
  D)
 
  1.2 cm
  E)
 
  1.6 cm

Question 2

It can be shown that the approximate age of the universe is 1/H, where H is the Hubble constant. Taking H = 20 km/s/Mly, estimate the age of the universe, in years.
 
  A)
 
  1500 years
  B)
 
  15 thousand years
  C)
 
  15 million years
  D)
 
  15 billion years
  E)
 
  15 trillion years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

angrybirds13579

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


Anajune7

  • Hero Member
  • *****
  • Posts: 574
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


angrybirds13579

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Saguaro National Park in Arizona, part of the Sonoran Desert Saguaro National Park in Arizona, part of the Sonoran Desert
Scorpions, Spiders and Sharks: Electron-Microscope Images Scorpions, Spiders and Sharks: Electron-Microscope Images
A Midsagittal View of Part of the Brain A Midsagittal View of Part of the Brain
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ... (b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...
Sites of action of some respiratory inhibitors and artificial electron acceptors Sites of action of some respiratory inhibitors and artificial electron acceptors
Annotation of a DNA sequence containing part of the human beta globin gene Annotation of a DNA sequence containing part of the human beta globin gene
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library