If it takes 10 seconds for the thunder to roll in, the lightning struck about 2 miles or 3 kilometers away. The temperature of sea water is assumed to be 4 degrees C in the depth of 1000m, and 2 degrees in the depth of 3000m or more. Schools are filled with the sounds of packed hallways and cafeterias, band practices, and sporting events. If the total distance travelled was 500 miles and the time it took you was 5 hours, then your average speed was 500 / 5 = 100 miles per hour (mph). If you have distance in kilometers, then speed should also be in km/h (kilometers per hour). The next storm approaching the west will bring additional heavy snow for higher elevations and gusty winds. Using the observe() method, which does this, there is a difference of 0.02 seconds. About 11.83 seconds at sea level. Curiously, some animals can perceive this range of sound waves, which is why elephants flee in fear when earthquake events are about to occur. How long does it take sound to travel 3 miles? - Quora How fast would I have to go to go 40 miles in 15 minutes? The guidelines from the Department of Homeland Security say that its better to unplug everything during a thunderstorm because lightning strikes across electric poles might burst your home power lines. A car can go from rest to 45 km/hr in 5 seconds. In dry air at 20 C (68 F), the speed of sound is 343.2 metres per second (1,126 ft/s; 1,236 km/h; 768 mph; 667 kn), or a kilometre in 2.914 s or a mile in 4.689 s. Examples of electromagnetic waves are light, microwaves, and radio waves. The Guiness World Record of the Farthest distance travelled by a human voice belongs the Spanish-speaking inhabitants of the Canary Island of La Gomera, is intelligible under ideal conditions at 8 km (5 miles). Sounds can propagate through solids better than they can propagate through air because their density/stiffness are greater (this means that sound travels faster). 2. There are three ways that sound can be transmitted: through air, through water, or through solids. Travel more than 100 km above the surface of the Earth, and you're in space, at the edge of the atmosphere. Ultrasound imaging uses ultrasound waves to obtain images of the body's internal organs, which can be used, for example, to calculate the volume of your bladder. The video premiered during a Noisy Planet presentation at Westbrook Elementary School, in Bethesda, Maryland, to a group of engaged fourth graders. The sound speed minimum creates a sound channel in which sound waves can travel long distances. Sound Speed Minimum - Discovery of Sound in the Sea Advertisement Advertisement New questions in Physics. Rivers and Lakes Say you travelled a certain distance with a car or another vehicle and you want to calculate what its average speed was. by Tim Brice and Todd Hall. If you want the result in km/h, you can convert from miles to km to get 788.58 km/h. Calculate the time taken by a sound wave of frequency 1000 Hz and things to do before during and after typhoon? how long does it take sound to travel 1000m through the air at 36
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