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 53 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
:D TYSM

raenoj

  • Member
  • Posts: 340
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Amniocentesis. In this examination procedure, amniotic fluid is aspirated with a syringe that is ins Amniocentesis. In this examination procedure, amniotic fluid is aspirated with a syringe that is ins
Transfer RNA (tRNA) Structure Transfer RNA (tRNA) Structure
Daniel Burnham’s Flatiron Building (1902) was one of the first to use steel girders to hold up the b Daniel Burnham’s Flatiron Building (1902) was one of the first to use steel girders to hold up the b
Ways to prevent heat waves Ways to prevent heat waves
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
An automobile engine generates 2160 Joules of heat that must be carried away by An automobile engine generates 2160 Joules of heat that must be carried away by
Video: Graded potentials - electrical characteristics and types

For a complete list of videos, visit our video library