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

Author Question: Which is the best indication of the usefulness of a machine, the actual mechanical advantage or the ... (Read 45 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
on: Jul 28, 2018
Which is the best indication of the usefulness of a machine, the actual mechanical advantage or the theoretical mechanical advantage?

Question 2

A large, metallic, spherical shell has no net charge. It is supported on an insulating stand and has a small hole at the top. A small tack with charge Q is lowered on a silk thread through the hole into the interior of the shell. What is the charge on the outer surface of the shell now?
  1.Q
  2.Q/2
  3.0
  4.-Q/2
  5.-Q


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bubulittle310@msn.cn

  • Sr. Member
  • ****
  • Posts: 281
Reply #1 on: Jul 28, 2018
Answer to Question 1

Since machines are generally used to increase the force that can be applied to a load,
the actual mechanical advantage is usually the most useful. The theoretical
mechanical advantage is sometimes useful, however, when the machine in question is
judged by how far the load is moved during its operation.

Answer to Question 2

1


chandani

  • Member
  • Posts: 541
Reply 2 on: Jul 28, 2018
Excellent

AmberC1996

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Sweat machine Sweat machine
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
Corrosion on a battery cable could be an indication that the battery is either being overcharged ... Corrosion on a battery cable could be an indication that the battery is either being overcharged ...
Strategic Management and Competitive Advantage: Concepts and Cases, 6th Edition Strategic Management and Competitive Advantage: Concepts and Cases, 6th Edition
ECG MACHINE ECG MACHINE
Ecg MACHINE Ecg MACHINE
Video: Integumentary Anatomy

For a complete list of videos, visit our video library