« previous next »

Author Question: While spinning down from 500 rpm to rest, a flywheel does of work. This flywheel is in the shape of ... (Read 113 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
on: Jul 29, 2018
While spinning down from 500 rpm to rest, a flywheel does of work. This flywheel is in the shape of a solid uniform disk of radius 1.2 m. What is the mass of this flywheel?
 
  A) 4.0 kg
  B) 3.4 kg
  C) 4.6 kg
  D) 5.2 kg

Question 2

Which of the following processes is an example of an energy transformation from chemical energy to gravitational energy?
 
  A) burning coal to run an electric generator
  B) using the water behind a dam to run an electric generator
  C) a ball rolling downhill
  D) lifting a book, with your hands, from the floor to a table top
  E) striking lighting a match to warm up your hand


micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

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.

Shape changes in molecules Shape changes in molecules
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Many hunger-relief programs work to provide food aid to needy nations Many hunger-relief programs work to provide food aid to needy nations
Where do Psychological Practitioners Work? Where do Psychological Practitioners Work?
A sample of work by a Grade 4 student with a specific learning disorder A sample of work by a Grade 4 student with a specific learning disorder
How do resultant force work among different angles? How do resultant force work among different angles?
Video: Eczema

For a complete list of videos, visit our video library