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 42 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
YES! Correct, THANKS for helping me on my review

31809pancho

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

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.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Sources of SO2 Pollution in the Atmosphere Sources of SO2 Pollution in the Atmosphere
The Upper Troposphere: Rossby Waves The Upper Troposphere: Rossby Waves
Oxidative phase of the pentose phosphate pathway Oxidative phase of the pentose phosphate pathway
How to find the antiderivative of double-angle trigonometric functions, sin(2x), cos(2x), etc. How to find the antiderivative of double-angle trigonometric functions, sin(2x), cos(2x), etc.
Waves Approaching the Shore Waves Approaching the Shore
Video: Wound Cultures

For a complete list of videos, visit our video library