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

Author Question: If the phase angle between sound waves from two different point sources is 180, what kind of ... (Read 85 times)

mp14

  • Hero Member
  • *****
  • Posts: 534
on: Jul 27, 2018
If the phase angle between sound waves from two different point sources is 180, what kind of interference will occur?
 
  A) destructive
  B) constructive
  C) either constructive or destructive

Question 2

Why do power tools with a plastic case not have a 3-prong plug but metal encased tools have (or should have) 3-prong plugs?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dawsa925

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

The third wire (large round prong plug) connects to ground and grounds the metal case. A hot wire accidentally coming in contact with the case will blow a fuse. A plastic case is insulation and does not need to be grounded for safety.


mp14

  • Member
  • Posts: 534
Reply 2 on: Jul 27, 2018
Excellent

blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

One-point linear perspective. One-point linear perspective.
Stressing that education reproduces a country’s social class system, conflict theorists point out ... Stressing that education reproduces a country’s social class system, conflict theorists point out ...
Look-Alike and Sound-Alike Drug Names Look-Alike and Sound-Alike Drug Names
Acute Phase Proteins Acute Phase Proteins
How to plot a sine function containing an amplitude and phase-shift (Question 2 of 3) How to plot a sine function containing an amplitude and phase-shift (Question 2 of 3)
Rossby waves Rossby waves
Video: Protein digestion - stomach & small intestine

For a complete list of videos, visit our video library