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 149 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?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

The Grants and natural selection of beak size among the medium ground finch. The Grants and natural selection of beak size among the medium ground finch.
Ground cover and colour such as shown here in (a) white sand Ground cover and colour such as shown here in (a) white sand
Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground
Measuring the client’s height with a platform scale Measuring the client’s height with a platform scale
MOMENTUM AND IMP meteor(158 kg) is moving with a velocity of 127 m/s , and breaks into two ... MOMENTUM AND IMP meteor(158 kg) is moving with a velocity of 127 m/s , and breaks into two ...
Continuous Variation in Height (Males) Continuous Variation in Height (Males)
Video: First Stage of Labor and Delivery Video

For a complete list of videos, visit our video library