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

Author Question: A circle has an area of 2.0 m2 . A second circle has triple the radius of the first. The area of the ... (Read 563 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jul 28, 2018
A circle has an area of 2.0 m2 . A second circle has triple the radius of the first. The area of the second circle is _____ times that of the first.
 a. 27
  c. 3.0
  b. 9.0
  d. 0.67

Question 2

The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion. Assume that 40 cm3 of gasoline is atomized into N spherical droplets. Each droplet has a radius of 2.0  10-5 m. Find the total surface area of these N spherical droplets.
 a. 60,000 cm2
  c. 20,000 cm2
  b. 24,000 cm2
  d. 2800 cm2


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xiaomengxian

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


mpobi80

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


xiaomengxian

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

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?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Firing Patterns of a Supplementary Motor Area Neuron Firing Patterns of a Supplementary Motor Area Neuron
The Circle of Relationship Issues and Sexual Problems The Circle of Relationship Issues and Sexual Problems
Nomogram for determining Body Surface Area (BSA). Nomogram for determining Body Surface Area (BSA).
Unusual base pairings in tRNA: (c, d) Some examples of triple interactions Unusual base pairings in tRNA: (c, d) Some examples of triple interactions
Increase in Surface Area by Mechanical Weathering Increase in Surface Area by Mechanical Weathering
Which color is placed at the center of the circle? Which color is placed at the center of the circle?
Video: Conduction of action potentials

For a complete list of videos, visit our video library