This would be a category 5 hurricane.
If the wind speed is less than 75 mph it is not a hurricane at all and the most severe hurricanes are more than 150 mph Hurricanes have a Wind speed of 75 or Higher
There is actually a good deal of overlap. The winds of most hurricanes and tornadoes and hurricanes fall into the same range. However, the strongest tornadoes have faster winds than the strongest hurricanes.
yes a hurricane can get higher than 390 feet.
If the speed of sound near the ground is less than the speed of sound higher then in this special case the temperature at the ground must be less than the temperature higher up. Usually the temperature at the ground is warmer than the temperature high up in the sky. The speed of sound changes mainly with the temperature.
Yes, X-rays travel at the speed of light in a vacuum, which is higher than the speed of visible light. This is because the speed of light in a medium is inversely proportional to the refractive index of the medium, and X-rays have a shorter wavelength than visible light, allowing them to travel at a higher speed.
Most rockets are much faster than fighter aircraft.
Technically speaking DSL is high speed. The maximum speed of DSL is 3mbs. Cable usually has a speed that starts higher than 3mbs, and is often faster than 5mbs, and goes as high as 15mbs.
The speed of a router is higher than that of a modem. However, the specifications of the modem do determine its speed.
ya
It is heat transfer at speed higher than 0.3 Mach.
Yes
Yes