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

Author Question: A child's toy is suspended from the ceiling by means of a string. The Earth pulls downward on the ... (Read 150 times)

maychende

  • Hero Member
  • *****
  • Posts: 556
on: Jul 27, 2018
A child's toy is suspended from the ceiling by means of a string. The Earth pulls downward on the toy with its weight force of 8 N. If this is the action force, what is the reaction force?
 
  A) the string pulling downward on the ceiling with an 8-N force
  B) the ceiling pulling upward on the string with an 8-N force
  C) the string pulling upward on the toy with an 8-N force
  D) the toy pulling upward on the Earth with an 8-N force
  E) the toy pushing downward on the Earth with an 8-N force

Question 2

A race car circles 10 times around an 8-km track in 20 min. What is its average speed per lap?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

Average lap speed is 70 m/s.


maychende

  • Hero Member
  • *****
  • Posts: 556
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

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?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

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.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Saturn as Seen from Earth Saturn as Seen from Earth
Precession: Earth’s axis rotates, or “wobbles” Precession: Earth’s axis rotates, or “wobbles”
Marasmus The emaciated appearance of this child is a sign (and symptom) of marasmus Marasmus The emaciated appearance of this child is a sign (and symptom) of marasmus
Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ... Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ...
Video: How to make cDNA Animation

For a complete list of videos, visit our video library