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 204 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?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Round and wrinkled phenotypes Round and wrinkled phenotypes
Outer Space Outer Space
Does this child have legs of different lengths or scoliosis? Look at the level of the iliac crests a Does this child have legs of different lengths or scoliosis? Look at the level of the iliac crests a
Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period
The steps in the hearing process. (1) Sound waves enter the outer ear and travel through the ear ... The steps in the hearing process. (1) Sound waves enter the outer ear and travel through the ear ...
Video: Isovolumetric VC, Ventricular ejection, Isovolumetric & Passive ventricular filling

For a complete list of videos, visit our video library