« previous next »

Author Question: A child does 350 J of work while pulling a box from the ground up to his tree house at a steady ... (Read 88 times)

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
on: Jul 29, 2018
A child does 350 J of work while pulling a box from the ground up to his tree house at a steady speed with a light rope. The tree house is above the ground. What is the mass of the box?
 
  A) 8.9 kg
  B) 5.3 kg
  C) 6.7 kg
  D) 8.0 kg

Question 2

Which of the following statements about spherical mirrors is correct? (There could be more than one correct choice.)
 
  A) A concave mirror always produces a real image.
  B) A convex mirror always produces a virtual image.
  C) A concave mirror always produces a virtual image.
  D) A convex mirror always produces a real image.
  E) A convex mirror always produces an upright image.


Brenm

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

B, E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
Reply #2 on: Jul 29, 2018
Thank you!


Brenm

  • Sr. Member
  • ****
  • Posts: 359
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Antarctic tree Antarctic tree
When the White House tapes were turned over to the special prosecutor, several crucial sections had ... When the White House tapes were turned over to the special prosecutor, several crucial sections had ...
Thomas Coram, View of Mulberry House and Street. Thomas Coram, View of Mulberry House and Street.
The Growing Child The Growing Child
Chemistry work Chemistry work
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

For a complete list of videos, visit our video library