« previous next »

Author Question: A 2.0-kg object is lifted vertically through 3.00 m by a 150-N force. How much work is done on the ... (Read 46 times)

jparksx

  • Hero Member
  • *****
  • Posts: 570
on: Jul 29, 2018
A 2.0-kg object is lifted vertically through 3.00 m by a 150-N force. How much work is done on the object by gravity during this process?
 
  What will be an ideal response?

Question 2

Elizabeth lifts a 10 N book from the floor to the table, a height of 2 m. How much work does Elizabeth do?
 
  A) 20 watts
  B) 5 joules
  C) 20 joules
  D) Elizabeth does zero work
  E) 5 watts


Perkypinki

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 29, 2018
Answer to Question 1

-59 J

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Part of this child's pattern of daily living is attending child care during the work day Part of this child's pattern of daily living is attending child care during the work day
Work and Gender: Women at Work in India Work and Gender: Women at Work in India
Work and Gender: Women at Work in India Work and Gender: Women at Work in India
A rubber mallet used to deliver a force to an object without harming the surface. A rubber mallet used to deliver a force to an object without harming the surface.
Tag identify that the power has been removed and service work is being done. Tag identify that the power has been removed and service work is being done.
A typical fuel-pressure regulator that has a spring that exerts 46 pounds of force against the ... A typical fuel-pressure regulator that has a spring that exerts 46 pounds of force against the ...
Video: Red Blood Cells - Erythropoietin (EPO)

For a complete list of videos, visit our video library