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 286 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?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Gout. Also known as gouty arthritis, it often strikes the big toe, as seen in this illustration. Gout. Also known as gouty arthritis, it often strikes the big toe, as seen in this illustration.
Positive velocity graph Positive velocity graph
Have you ever experienced a kidney stone before? Have you ever experienced a kidney stone before?
Figure and Ground Figure and Ground
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
How do i calulate an object of that is dropped from (g=9.80m/s2) for 5 s before hitting the ... How do i calulate an object of that is dropped from (g=9.80m/s2) for 5 s before hitting the ...
Video: Predator- prey competition and symbiosis

For a complete list of videos, visit our video library