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

Author Question: A 4.0-kg block is lowered down a 37 incline a distance of 5.0 m from point A to point B. A ... (Read 71 times)

Starlight

  • Hero Member
  • *****
  • Posts: 567
on: Jul 28, 2018

A 4.0-kg block is lowered down a 37 incline a distance of 5.0 m from point A to point B. A horizontal force (F = 10 N) is applied to the block between A and B as shown in the figure. The kinetic energy of the block at A is 10 J and at B it is 20 J. How much work is done on the block by the force of friction between A and B?
 
   


   
  a.
  58 J
   
  b.
  53 J
   
  c.
  68 J
   
  d.
  63 J
   
  e.
  47 J

Question 2

A force acting on an object moving along the x axis is given by Fx = (14x  3.0x2) N where x is in m. How much work is done by this force as the object moves from x = 1 m to x = +2 m?
   
  a.
  +12 J
   
  b.
  +28 J
   
  c.
  +40 J
   
  d.
  +42 J
   
  e.
  28 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

GCabra

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

a


Starlight

  • Hero Member
  • *****
  • Posts: 567
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


GCabra

  • Sr. Member
  • ****
  • Posts: 331
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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.

The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
Four-point gait. Four-point gait.
Major marma point locations. Major marma point locations.
Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh
Constructing a Three-Point Recombination Map Constructing a Three-Point Recombination Map
Video: Interview with Person who has Panic Attacks

For a complete list of videos, visit our video library