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

Author Question: A child is riding near the outer rim of a freely-rotating playground merry-go-round. What happens if ... (Read 199 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A child is riding near the outer rim of a freely-rotating playground merry-go-round. What happens if the child walks towards the center?
 
  What will be an ideal response?

Question 2

An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. The astronaut's destination is a star system 14.4 light-years away.
 
  (One light-year is the distance light travels in one year.) According to the astronaut, how long does the trip take?
  A) 15.0 y B) 14.4 y C) 22.7 y D) 4.20 y E) 9.34 y


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

The merry-go-round rotates more rapidly because the moment of inertia has decreased while the angular momentum is conserved.

Answer to Question 2

D


ETearle

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 29, 2018
TY


Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to
A plant grown from a [round, yellow] seed is crossed with a plant grown from a [ A plant grown from a [round, yellow] seed is crossed with a plant grown from a [
Child Labor Rates and GDP Worldwide Child Labor Rates and GDP Worldwide
Providing structure and organization in the child’s environment may aid the development of ... Providing structure and organization in the child’s environment may aid the development of ...
A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ... A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ...
Rotating a matrix along the x-axis multiplication Rotating a matrix along the x-axis multiplication
Video: hGH (protein synthesis, growth and development)

For a complete list of videos, visit our video library