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

Author Question: A solid concrete wall 4.0 m by 2.4 m and 30 cm thick, with a thermal conductivity of 1.3 W/(mK), ... (Read 69 times)

karlynnae

  • Hero Member
  • *****
  • Posts: 599
on: Jul 29, 2018
A solid concrete wall 4.0 m by 2.4 m and 30 cm thick, with a thermal conductivity of 1.3 W/(mK), separates a basement at 18C from the ground outside at 6C. How much heat flows through the wall in one hour?
 
  A)
 
  1.8 MJ
 
  B)
 
  1.8 kJ
 
  C)
 
  500 J
 
  D)
 
  5.0 MJ
 
  E)
 
  5.0 kJ

Question 2

A solid sphere is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it starts up a ramp that makes an angle of 25.0 with the horizontal.
 
  What is the speed of the sphere after it has rolled 3.00 m up the ramp?
  A)
 
  4.01 m/s
 
  B)
 
  8.02 m/s
 
  C)
 
  1.91 m/s
 
  D)
 
  2.16 m/s
 
  E)
 
  1.58 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

asware1

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

E


karlynnae

  • Member
  • Posts: 599
Reply 2 on: Jul 29, 2018
Wow, this really help

amcvicar

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Sol LeWitt, Wall Drawing No. 681 C Sol LeWitt, Wall Drawing No. 681 C
Common skin signs are often evidence of an illness or disorder. A papule is a solid, circumscribed, ... Common skin signs are often evidence of an illness or disorder. A papule is a solid, circumscribed, ...
The arrangement of water molecules in (a) solid ice, and (b) liquid water. The arrangement of water molecules in (a) solid ice, and (b) liquid water.
Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ... Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ...
Normal and thermal inversion air masses interaction Normal and thermal inversion air masses interaction
Solid foods like fortified infant rice cereal and oatmeal Solid foods like fortified infant rice cereal and oatmeal
Video: Multiple Sclerosis Animation

For a complete list of videos, visit our video library