If we use a common alkyl halide, such as methyl bromide, and a common solvent, ethanol, we can examine the rate at which various nucleophiles substitute the methyl carbon. Nucleophilicity is thereby related to the relative rate of substitution reactions at the halogen-bearing carbon atom of the reference alkyl halide.
U.S. Navy. For an airplane to break the sound barrier, it must hit speeds of about 770 mph â when it does that a couple of things happen. All the air in front of the craft gets pushed together, can't get out of its own way â and when that magic number gets hit â the air finally breaks free and crashes behind the plane causing a sonic boom.
How fast does thrust ssc go? Thrust SSC achieved the World Land Speed Record, on 15 October  1997. It became the first car to officially break the sound barrier  when it reached a speed of 1,228 km/h (7 â¦ 63 mph).Answered.ow fast does thrust ssc go? Thrust SSC achieved the World Land Speed Record, on 15 October  1997. It became the first car to officially break the sound barrier  when it reached a speed of 1,228 km/h (7 â¦ 63 mph).