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

Author Question: Compared to blue flames, yellow flames: A) Burn at a lower temperature. B) Burn more cleanly. C) ... (Read 123 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
Compared to blue flames, yellow flames:
 
  A) Burn at a lower temperature. B) Burn more cleanly.
  C) Produce about the same amount of heat. D) Burn at a higher temperature.

Question 2

How many wires are needed for a communicating control system to control a three-stage heat, two-stage cool heat pump?
 
  A) Nine wiresone for each stage plus reversing valve and power
  B) Five wiresone for each stage heat and cool
  C) Four wirestwo for power and two for communication
  D) No wires are required because communicating systems are wireless.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


debasdf

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
Wow, this really help

isabelt_18

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Enzyme activity is affected substantially by temperature Enzyme activity is affected substantially by temperature
The dorsal (red) and ventral (blue) body cavities. The dorsal (red) and ventral (blue) body cavities.
Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo
Cocoa butter melts at body temperature Cocoa butter melts at body temperature
Planet Earth compared to all its water and air! Planet Earth compared to all its water and air!
Daily Variations in Temperature and Relative Humidity Daily Variations in Temperature and Relative Humidity
Video: Proteins Defined, Hierarchy & Composition of Cells

For a complete list of videos, visit our video library