This topic contains a solution. Click here to go to the answer

Author Question: Suppose that the speed of an electron traveling 2000 m/s is known to an accuracy of 1 part in 105 ... (Read 84 times)

Anajune7

  • Hero Member
  • *****
  • Posts: 574
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
Answer to Question 1

B

Answer to Question 2

D



Anajune7

  • Hero Member
  • *****
  • Posts: 574
Both answers were spot on, thank you once again




 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library