Una carga eléctrica de 3 microcoulombs se encuentran en el aire a 35 cm de otra carga. La magnitud de la fuerza con la cual se rechazan es de 6×10^-1 N. ¿Cuánto vale la carga desconocida? , lo necesito urgente, ley de coulumb

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?