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

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 17 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
on: Jul 28, 2018
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
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

B


jilianpiloj

  • Member
  • Posts: 521
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

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

Note the thickening of the intestinal wall and the erosion of the inner lining of the ileum, often s Note the thickening of the intestinal wall and the erosion of the inner lining of the ileum, often s
Assisting the patient to transfer from the bed or examining table to a wheelchair. Assisting the patient to transfer from the bed or examining table to a wheelchair.
Energy Transfer Processes: Forced Convection Energy Transfer Processes: Forced Convection
Explain the myogenic autoregulation of the glomerular filtration rate Explain the myogenic autoregulation of the glomerular filtration rate
Determine the nominal annual rate of interest of the following ordinary general annuity. Determine the nominal annual rate of interest of the following ordinary general annuity.
The processing of ribosomal and transfer RNA The processing of ribosomal and transfer RNA
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

For a complete list of videos, visit our video library