Author Question: Glycerin, with a viscosity of 1.5 N s/m2, is flowing with an average speed of 1.2 m/s through a ... (Read 114 times)

CQXA

  • Hero Member
  • *****
  • Posts: 546
Glycerin, with a viscosity of 1.5 N  s/m2, is flowing with an average speed of 1.2 m/s through a tube that has a radius of 5.0 mm and is 25 cm long. What is the drop in pressure over the length of this pipe?
 
  A) 140 kPa
  B) 46 kPa
  C) 72 kPa
  D) 76 kPa
  E) 130 kPa

Question 2

Given perfect lenses, what is the main reason that a telescope with a large-diameter objective lens can produce a sharper image than one with a small-diameter lens?
 
  A) A larger lens can gather more light than a smaller lens.
  B) A larger lens can focus more accurately than a smaller lens.
  C) There is less diffraction with a larger lens than with a smaller lens.
  D) A larger lens can focus more wavelengths of light than a smaller lens.
  E) A larger lens has a longer focal length than a smaller lens.


essyface1

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

A

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

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?

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.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

For a complete list of videos, visit our video library