This topic contains a solution. Click here to go to the answer

Author Question: If the R-value of a wall is 10 ft2-F-hr/Btu, then the rate of heat transfer through a 2 ft 3 ft ... (Read 24 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
If the R-value of a wall is 10 ft2-F-hr/Btu, then the rate of heat transfer through a 2 ft  3 ft section of wall, with T = 50F, will be:
 a. 10 b. 30 c. 500 d. 3000 e. 10,000 Btu/hr

Question 2

A car travels in a due northerly direction at a speed of 55 km/h. The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal. If the rain is falling vertically with respect to the earth, what is the speed of the rain with respect to the earth?
 a. 48 km/h
  b. 95 km/h
  c. 58 km/h
  d. 32 km/h
  e. 80 km/h



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

perkiness

  • Sr. Member
  • ****
  • Posts: 348
Answer to Question 1

b

Answer to Question 2

B




jilianpiloj

  • Member
  • Posts: 521
Reply 2 on: Jul 28, 2018
Gracias!


Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

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.

For a complete list of videos, visit our video library