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

Author Question: A 30. N stone is dropped from a height of 10. m, and strikes the ground with a velocity of 13. m/s. ... (Read 262 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
on: Jul 27, 2018
A 30. N stone is dropped from a height of 10. m, and strikes the ground with a velocity of 13. m/s. What average force of air friction acts on it as it falls?
 
  A) 7.2 N
  B) 2.9 N
  C) 1.2 N
  D) 4.1 N
  E) 0.13 KN

Question 2

Two charged objects attract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between them
 
  A) becomes zero.
  B) doubles.
  C) halves.
  D) quadruples.
  E) increases, but we can't say how much without knowing the distance between them.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


BrownTown3

  • Hero Member
  • *****
  • Posts: 564
Reply #2 on: Jul 27, 2018
TY


stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

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?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Horses need to lie down occasionally, and prefer soft ground for a nap. Horses need to lie down occasionally, and prefer soft ground for a nap.
Measuring Patient Height Measuring Patient Height
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Kidney Stone Kidney Stone
Height and weight table Height and weight table
Video: Calvin cycle (The light-independent reactions )

For a complete list of videos, visit our video library