If a curve with a radius of 93 m is properly banked for a car traveling 74 km/h , what must be the coefficient of static friction for a car not to skid when traveling at 91 km/h ? Express your answer using two significant figures.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up