+- +-

+-User

Welcome, Guest.
Please login or register.
 
 
 
Forgot your password?

+-Stats ezBlock

Members
Total Members: 51
Latest: JUST4TheFACTS
New This Month: 0
New This Week: 0
New Today: 0
Stats
Total Posts: 14147
Total Topics: 268
Most Online Today: 3
Most Online Ever: 137
(April 21, 2019, 04:54:01 am)
Users Online
Members: 0
Guests: 1
Total: 1

Author Topic: Science  (Read 3994 times)

0 Members and 0 Guests are viewing this topic.

AGelbert

  • Administrator
  • Hero Member
  • *****
  • Posts: 31131
  • Location: Colchester, Vermont
    • Renwable Revolution
Re: Science
« Reply #105 on: July 05, 2019, 06:45:35 pm »
Is the Speed of Sound Constant?

The speed of light is a constant, always traveling at the rate of 186,000 miles (300,000 km) per second. The speed of sound, on the other hand, is much more fickle. For example, sound waves move at 761.2 miles per hour (1,225 km/h) at sea level when the air temperature is 59 degrees F (15 degrees C).

However, heat up the air and they move faster; cool the air, and they slow down.

That's why breaking the sound barrier high in the sky is relatively easy: Temperatures are colder, so a lower speed will do the job.

Interestingly, sound moves very quickly under water, where the molecules are much denser than they are in the air. Their density means that they bump into one another more quickly, which is how sound travels. Sound travels through water at approximately 4,856 feet per second (1,480 meters/sec) -- more than four times faster than its speed through the 💨 air. But because the molecules are denser in water, sound needs more energy (ie. loudness) -- to get moving. That's why faint sounds can't be heard under water like they can above it.

Sounds interesting:

► Sound doesn't exist in space because there aren't any molecules for it to travel through.
► The greatest sound ever recorded 💥 was the eruption of the Krakatoa volcano in 1883. The explosion could be heard 3,000 miles (4,828 km) away.

► A whip's snap is the sound of the tip breaking the sound barrier.

https://www.wisegeek.com/is-the-speed-of-sound-constant.htm

Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

 

+-Recent Topics

Doomstead Diner Daily by Surly1
November 21, 2019, 06:06:06 am

Batteries by AGelbert
November 20, 2019, 08:11:15 pm

🌟 IMPEACHMENT SCORE 🌠 by AGelbert
November 20, 2019, 07:27:38 pm

🚩 Global Climate Chaos ☠️ by AGelbert
November 20, 2019, 04:48:19 pm

Wind Power by AGelbert
November 20, 2019, 01:53:46 pm

🦕🦖 Hydrocarbon 🐍 Hellspawn Mens Rea Actus Reus modus operandi by AGelbert
November 20, 2019, 01:22:57 pm

2020 Presidential Election by AGelbert
November 20, 2019, 12:58:59 pm

Science by AGelbert
November 19, 2019, 04:09:49 pm

Plants Which are BOTH Nutritional and Medicinal by AGelbert
November 19, 2019, 03:39:22 pm

Corruption in Government by AGelbert
November 19, 2019, 02:35:56 pm