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

Author Question: A 30-kg child sitting 5.0 m from the center of a merry-go-round has a constant speed of 5.0 m/s. ... (Read 89 times)

robinn137

  • Hero Member
  • *****
  • Posts: 544
on: Jul 28, 2018
A 30-kg child sitting 5.0 m from the center of a merry-go-round has a constant speed of 5.0 m/s. While she remains seated in the same spot and travels in a circle, the work the seat performs on her in one complete rotation is
 a. 0 J.
  b. 150 J.
  c. 1 500 J.
  d. 4 700 J.
  e. 46 000 J.

Question 2

When a crate of mass m is dragged a distance d along a surface with coefficient of kinetic friction mk, then dragged back along the same path to its original position, the work done by friction is
 a. 0.
  b. -mkmgd. c. +mkmgd. d. -2mkmgd. e. +2mkmgd.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


robinn137

  • Member
  • Posts: 544
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

cpetit11

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

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

The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis (center), a variable star The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis (center), a variable star
Supervised role-play can help a child feel more at ease during office visits. Supervised role-play can help a child feel more at ease during office visits.
A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ... A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ...
Kwashiorkor The edema in this child’s belly is a classic sign of kwashiorkor Kwashiorkor The edema in this child’s belly is a classic sign of kwashiorkor
An overweight child not only has different kinds of encounters with his peers An overweight child not only has different kinds of encounters with his peers
A wrinkled and round garden pea, the phenotypic traits in one of Mendel’s monohybrid crosses A wrinkled and round garden pea, the phenotypic traits in one of Mendel’s monohybrid crosses
Video: Structure of Amino Acid, Peptide Bonds & Polypeptides

For a complete list of videos, visit our video library