Number 77. After the answer, can I please have an explanation as to how it came to that answer? Thank you.

night? The speed of light is v = 3.00 x 10 m/s.) (b) What is the force on the protons? 77. A car rounds an unbanked curve of radius 65 m. If the coefficient of static friction between the road and car is 0.70, what is the maximum speed at which the car can traverse the curve without slipping? 78. A banked highway is designed for traffic