Yes they do
up to about 5 to 12 hours of work
tsunamis are often unnoticed in deep water/ its when they get into swallow water where the waves become more intense.
1 wave / 8 seconds = 0.125 waves per second
Yes, your alarm will work for up to 5 days without power if it is installed correctly.
No, it has been proven to be rather in-effective.
Scientist believe that yes, this may have a big impact on children than adults ageing from 5-10 due to soft tissues in the brain.
The 5 letters in SONAR are the 4 words SOund Navigation And Ranging
SONAR stands for Sound Detection and ranging, and RADAR stands for Radio Aid to Detection and Ranging. as described below (by richard), the principle is simple. Point a signal source in one direction, Listen for the echo to return, and time how long the return signal took, Divide it in two, and with some math, and knowing the speed of the wave, work out how far away the object is. Now if you make the sender/receiver directional. you can move it left and right, and see how wide the object is. If you can rotate it 360 degrees, you get a map of what is arround you. (Gavin)BY sending out a hi frequency pulse to an aircraft and detecting the timing for the return it can be calculate the speed and direction basically location of an aircraft. Sonar has the same principle applied timing of a response return PING to detect the location.Radar is a system that uses radio electromagnetic waves to provide a range to a target normal in air or a vacuum. RADAR propagates its radio waves at the speed of light. Sonar uses sound and propagates in pressure wave through water and the speed of sound. And provides a range to a target in a similar way, just at slow speed.
SONAR
They are obtainable after getting Sonar Level 5.
HTML5 does not reuqire any more downloads except for your browser. Plugins require and extra download, which can use disk space. However, the better one depends on how fast your computer is sometimes. I perfer plugins since HTML5 lags my PC.
Magnetic waves electromagnetic waves wind waves surface waves capillary waves
The frequency of 5 waves passing by every second is 5 hertz (Hz). This means that 5 complete waves pass a given point in one second.
rockets jets radar sonar atomic bomb penicillin
Sound waves, light waves, radio waves, microwaves, and ocean waves.
The frequency would be 5 Hz, as hertz (Hz) is the unit used to measure frequency in waves per second.
Ocean waves: These are created by the wind blowing across the surface of the ocean. Sound waves: These are vibrations that travel through a medium (such as air) and allow us to hear. Light waves: These are electromagnetic waves that allow us to see and come in different wavelengths. Seismic waves: These are waves generated by the movement of tectonic plates during an earthquake. Radio waves: These are used for communication and broadcasting and are part of the electromagnetic spectrum.