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

Author Question: Materials A, B, and C have R values of 1, 4, and 8 ft2-F-hr/Btu, respectively. If the rate of heat ... (Read 19 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
on: Jul 28, 2018
Materials A, B, and C have R values of 1, 4, and 8 ft2-F-hr/Btu, respectively. If the rate of heat transfer through material A alone is 20 Btu/hr, then the rate of heat transfer through the combination of A, B and C is _____.
 a. 1.5 b. 2.5 c. 4.0 d. 7.0 e. 80 Btu/hr

Question 2

A tennis player standing 12.6 m from the net hits the ball at 3.00 above the horizontal. To clear the net, the ball must rise at least 0.330 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

48.6 m/s


magmichele12

  • Member
  • Posts: 559
Reply 2 on: Jul 28, 2018
Wow, this really help

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

A nurse adjusts the rate of a client’s IV. A nurse adjusts the rate of a client’s IV.
Relative rate test, calibrating the molecular clock, and calculating divergence dates. Relative rate test, calibrating the molecular clock, and calculating divergence dates.
The rate of facilitated diffusion The rate of facilitated diffusion
The rate of global emissions is rising rapidly, especially in India and China The rate of global emissions is rising rapidly, especially in India and China
Outgroup role in relative rate test Outgroup role in relative rate test
Concordance Values in Monozygotic and Dizygotic Twins Concordance Values in Monozygotic and Dizygotic Twins
Video: DNA Replication Factory and Protein

For a complete list of videos, visit our video library