Forecast-Chart.com is forecasting a probability of 8.9% that the 30 Year Mortgage Interest Rate will be higher in 5 years. The table shows a probability of 90.7% that the rate will be lower in 5 years. (October, 2019 rate compared to the October, 2014 rate).
Hydroplaning can occur on any wet road surface, however, the first 10 minutes of a light rain can be the most dangerous. When light rain mixes with oil residue on the road surface, it creates slippery conditions that can cause vehicles, especially those traveling speeds in excess of 35 mph, to hydroplane.
The speed of sound is not a constant, but depends on altitude (or actually the temperature at that altitude). A plane flying Mach 1.0 at sea level is flying about 1225 km/h (661 Knots, 761 mph), a plane flying Mach 1.0 at 30000 ft is flying 1091 km/h (589 knots, 678 mph) etc. Speeds below Mach 1 are called subsonic, between Mach 0.8-1.2 Transonic and above Mach 1.2 Supersonic. Â©1996-2011 Fighter Planes and Military Aircraft.