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 108 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 first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Development of an atherosclerotic plaque that progressively narrows the lumen of an artery to the po Development of an atherosclerotic plaque that progressively narrows the lumen of an artery to the po
Sarah Sze, Triple Point (Pendulum). Sarah Sze, Triple Point (Pendulum).
Graph showing how the boiling point of the coolant increases as the percentage of antifreeze in ... Graph showing how the boiling point of the coolant increases as the percentage of antifreeze in ...
Enzyme block in phenylketonuria (PKU). Enzyme block in phenylketonuria (PKU).
Dew point/temperature relationships in (a) unsaturated air and saturated air (b and c). Dew point/temperature relationships in (a) unsaturated air and saturated air (b and c).
Three point charges lie on the x x axis. Charge 1 (+9.9 μC μ C ) is at the origin, ... Three point charges lie on the x x axis. Charge 1 (+9.9 μC μ C ) is at the origin, ...
Video: Osmosis - water transport

For a complete list of videos, visit our video library